Trip.com
>
Flights
>
Flights to United States
>
Flights to Texas
>
Flights to Houston
>
Singapore to Houston flight
>
Changi Airport to George Bush Intercontinental Airport flight

Explore the cheapest one-way and round-trip flights from Changi Airport to George Bush Intercontinental Airport over the next 90 days, with one-way fares from TRY 28,423 and round-trip from TRY 42,758. Based on Trip.com's latest 7-day flight data.

    • SIN 7:00 AM
      21h 37m
      1 stop
      IAH 3:37 PM
      Singapore - Houston | Thu, Nov 5 | Air Canada
      IAH 6:10 PM
      23h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Thu, Nov 12 | Air Canada
      TRY 42,758 TRY 47,659
      10% off
      10% off
      TRY 47,659 TRY 42,758
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Nov 19 | Air Canada
      IAH 6:10 PM
      22h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Tue, Nov 24 | Air Canada
      TRY 42,758 TRY 47,659
      10% off
      10% off
      TRY 47,659 TRY 42,758
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Mon, Dec 7 | Air Canada
      IAH 6:10 PM
      22h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Sat, Dec 12 | Air Canada
      TRY 42,758 TRY 47,659
      10% off
      10% off
      TRY 47,659 TRY 42,758
    • SIN 7:00 AM
      21h 37m
      1 stop
      IAH 3:37 PM
      Singapore - Houston | Mon, Nov 9 | Air Canada
      IAH 6:10 PM
      23h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Thu, Nov 12 | Air Canada
      TRY 42,893
      10% off
      TRY 47,659 TRY 42,893
    • SIN 7:00 AM
      21h 37m
      1 stop
      IAH 3:37 PM
      Singapore - Houston | Sat, Nov 7 | Air Canada
      IAH 6:10 PM
      23h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Thu, Nov 12 | Air Canada
      TRY 42,893
      10% off
      TRY 47,659 TRY 42,893
    • SIN 7:00 AM
      21h 37m
      1 stop
      IAH 3:37 PM
      Singapore - Houston | Tue, Nov 3 | Air Canada
      IAH 4:45 PM
      23h 30m
      1 stop
      SIN 5:15 AM
      Houston - Singapore | Sun, Nov 8 | Air Canada
      TRY 42,893
      10% off
      TRY 47,659 TRY 42,893
    • SIN 7:00 AM
      21h 37m
      1 stop
      IAH 3:37 PM
      Singapore - Houston | Mon, Nov 2 | Air Canada
      IAH 4:45 PM
      23h 30m
      1 stop
      SIN 5:15 AM
      Houston - Singapore | Thu, Nov 5 | Air Canada
      TRY 42,893
      10% off
      TRY 47,659 TRY 42,893
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Nov 26 | Air Canada
      IAH 6:10 PM
      22h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Thu, Dec 3 | Air Canada
      TRY 42,893
      10% off
      TRY 47,659 TRY 42,893
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Tue, Nov 24 | Air Canada
      IAH 6:10 PM
      22h 50m
      1 stop
      SIN 7:00 AM
      Houston - Singapore | Fri, Nov 27 | Air Canada
      TRY 42,893
      10% off
      TRY 47,659 TRY 42,893
    • SIN 1:00 PM
      17h 25m
      1 stop
      HOU 2:00 PM
      Singapore - Houston | Mon, Nov 2 | Normal Airline
      HOU 3:00 PM
      6h
      Nonstop
      SIN 4:00 PM
      Houston - Singapore | Wed, Nov 4 | Normal Airline
      Find more flights
      Find more flights
    • Cheapest
      SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Fri, Nov 13 | Air Canada
      TRY 28,423 TRY 32,166
      12% off
      12% off
      TRY 32,166 TRY 28,423
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Tue, Nov 3 | Air Canada
      TRY 28,445 TRY 32,166
      12% off
      12% off
      TRY 32,166 TRY 28,445
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sat, Nov 14 | Air Canada
      TRY 28,483 TRY 32,166
      11% off
      11% off
      TRY 32,166 TRY 28,483
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Nov 12 | Air Canada
      TRY 28,490
      11% off
      TRY 32,166 TRY 28,490
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sat, Dec 26 | Air Canada
      TRY 28,535
      11% off
      TRY 32,166 TRY 28,535
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Nov 19 | Air Canada
      TRY 28,543
      11% off
      TRY 32,166 TRY 28,543
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Fri, Nov 20 | Air Canada
      TRY 28,558
      11% off
      TRY 32,166 TRY 28,558
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Tue, Dec 15 | Air Canada
      TRY 28,596
      11% off
      TRY 32,166 TRY 28,596
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Dec 10 | Air Canada
      TRY 28,603
      11% off
      TRY 32,166 TRY 28,603
    • SIN 1:00 PM
      17h 25m
      1 stop
      HOU 2:00 PM
      Singapore - Houston | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Tue, Nov 3 | Air Canada
      TRY 28,445 TRY 67,427
      57% off
      57% off
      TRY 67,427 TRY 28,445
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sat, Nov 14 | Air Canada
      TRY 28,483 TRY 67,427
      57% off
      57% off
      TRY 67,427 TRY 28,483
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Nov 12 | Air Canada
      TRY 28,490 TRY 67,427
      57% off
      57% off
      TRY 67,427 TRY 28,490
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Thu, Nov 19 | Air Canada
      TRY 28,543
      57% off
      TRY 67,427 TRY 28,543
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Tue, Dec 15 | Air Canada
      TRY 28,603
      57% off
      TRY 67,427 TRY 28,603
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sun, Nov 22 | Air Canada
      TRY 28,723
      56% off
      TRY 67,427 TRY 28,723
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sun, Nov 15 | Air Canada
      TRY 29,700
      56% off
      TRY 67,427 TRY 29,700
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sat, Dec 5 | Air Canada
      TRY 29,820
      56% off
      TRY 67,427 TRY 29,820
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Sun, Nov 8 | Air Canada
      TRY 30,098
      55% off
      TRY 67,427 TRY 30,098
    • SIN 1:00 PM
      17h 25m
      1 stop
      HOU 2:00 PM
      Singapore - Houston | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Sun, Nov 22 | EVA Air
      TRY 38,325 TRY 131,498
      71% off
      71% off
      TRY 131,498 TRY 38,325
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Mon, Nov 2 | EVA Air
      TRY 38,490 TRY 131,498
      71% off
      71% off
      TRY 131,498 TRY 38,490
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Sat, Nov 21 | EVA Air
      TRY 38,656 TRY 131,498
      71% off
      71% off
      TRY 131,498 TRY 38,656
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Sun, Dec 13 | EVA Air
      TRY 38,686
      71% off
      TRY 131,498 TRY 38,686
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Wed, Nov 25 | EVA Air
      TRY 38,964
      70% off
      TRY 131,498 TRY 38,964
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Thu, Nov 19 | EVA Air
      TRY 38,964
      70% off
      TRY 131,498 TRY 38,964
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Mon, Dec 21 | EVA Air
      TRY 39,136
      70% off
      TRY 131,498 TRY 39,136
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Tue, Dec 22 | EVA Air
      TRY 39,692
      70% off
      TRY 131,498 TRY 39,692
    • SIN 3:45 PM
      19h 5m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Wed, Dec 16 | EVA Air
      TRY 39,940
      70% off
      TRY 131,498 TRY 39,940
    • SIN 1:00 PM
      17h 25m
      1 stop
      HOU 2:00 PM
      Singapore - Houston | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights
    • SIN 8:40 AM
      19h 58m
      1 stop
      IAH 2:38 PM
      Singapore - Houston | Tue, Nov 3 | Air Canada
      TRY 28,445 TRY 98,757
      71% off
      71% off
      TRY 98,757 TRY 28,445
    • SIN 11:30 PM
      22h 25m
      1 stop
      IAH 7:55 AM
      Singapore - Houston | Wed, Nov 4 | Scoot
      TRY 33,885 TRY 98,757
      66% off
      66% off
      TRY 98,757 TRY 33,885
    • SIN 11:30 PM
      22h 15m
      1 stop
      IAH 7:45 AM
      Singapore - Houston | Sun, Nov 1 | Scoot
      TRY 34,704 TRY 98,757
      65% off
      65% off
      TRY 98,757 TRY 34,704
    • SIN 12:40 AM
      21h 5m
      1 stop
      IAH 7:45 AM
      Singapore - Houston | Mon, Nov 2 | ZIPAIR
      TRY 35,312
      64% off
      TRY 98,757 TRY 35,312
    • SIN 12:40 AM
      21h 15m
      1 stop
      IAH 7:55 AM
      Singapore - Houston | Thu, Nov 5 | ZIPAIR
      TRY 35,545
      64% off
      TRY 98,757 TRY 35,545
    • SIN 10:10 AM
      20h 45m
      1 stop
      IAH 4:55 PM
      Singapore - Houston | Thu, Nov 5 | United Airlines
      TRY 37,161
      62% off
      TRY 98,757 TRY 37,161
    • SIN 10:10 AM
      20h 45m
      1 stop
      IAH 4:55 PM
      Singapore - Houston | Fri, Nov 6 | United Airlines
      TRY 37,176
      62% off
      TRY 98,757 TRY 37,176
    • SIN 1:15 PM
      21h 35m
      1 stop
      IAH 8:50 PM
      Singapore - Houston | Fri, Nov 6 | EVA Air
      TRY 37,499
      62% off
      TRY 98,757 TRY 37,499
    • SIN 8:55 AM
      21h 59m
      1 stop
      IAH 4:54 PM
      Singapore - Houston | Sat, Nov 7 | Singapore Airlines
      TRY 46,327
      53% off
      TRY 98,757 TRY 46,327
    • SIN 1:00 PM
      17h 25m
      1 stop
      HOU 2:00 PM
      Singapore - Houston | Mon, Nov 2 | Normal Airline
      Find more flights
      Find more flights

Displayed flight fares from Singapore to Houston are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com Price Insights: Flights from Changi Airport to George Bush Intercontinental Airport

What is the cheapest month for one-way flights from Changi Airport to George Bush Intercontinental Airport?

Data is based on average one-way flight prices from Changi Airport to George Bush Intercontinental Airport in Trip.com's database over the past 12 months.

Based on Trip.com’s data from the past 12 months, if you’re looking for a low-cost one-way ticket from Changi Airport to George Bush Intercontinental Airport, the best time to buy is in January, with an average price of TRY 38,137. You’ll want to avoid March, when the average price can reach as high as TRY 70,830.

TRY 70,830
TRY 54,484
TRY 38,137
TRY 21,791
    Cheapest
  • TRY 53,753
    Oct
  • TRY 44,277
    Nov
  • TRY 38,983
    Dec
  • TRY 38,137
    Jan
  • TRY 40,454
    Feb
  • TRY 70,830
    Mar
  • TRY 54,540
    Apr
  • TRY 56,851
    May
  • TRY 49,068
    Jun
  • TRY 44,786
    Jul
  • TRY 44,734
    Aug
  • TRY 40,496
    Sep

What is the cheapest day of the week to fly from Changi Airport to George Bush Intercontinental Airport?

The data is based on the past 12 months and shows the average ticket prices from Changi Airport to George Bush Intercontinental Airport for each day of the week in the Trip.com database.

Based on Trip.com’s data from the past 12 months, the cheapest day to depart from Changi Airport to George Bush Intercontinental Airport is Thursday, with average fares typically lower than other days. You’ll want to avoid flying on Monday, as ticket prices are usually the highest that day.

TRY 56,584
TRY 50,880
TRY 45,175
TRY 39,471
    Cheapest
  • TRY 56,584
    Mon
  • TRY 45,992
    Tue
  • TRY 49,403
    Wed
  • TRY 45,175
    Thu
  • TRY 47,529
    Fri
  • TRY 49,226
    Sat
  • TRY 46,951
    Sun

Which airline offers the cheapest flights from Changi Airport to George Bush Intercontinental Airport?

The cheapest airline flying from Changi Airport to George Bush Intercontinental Airport is Cebu Pacific (from TRY 26,349) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Cebu Pacific
From TRY 26,349
Japan Airlines
From TRY 26,364
Scoot
From TRY 26,590
Asiana Airlines
From TRY 26,620
Philippine Airlines
From TRY 26,687
Korean Air
From TRY 26,785
American Airlines
From TRY 26,830
Singapore Airlines
From TRY 26,898
Air China
From TRY 27,416
Air Canada
From TRY 28,408

Find more flights and airlines

What is the flight schedule from Changi Airport to George Bush Intercontinental Airport?

Check the schedule for flights from Singapore to Houston and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AC020

    Changi Airport

    7:00 AM

    SIN

    14h 25m

    Nonstop

    6:25 AM

    YVR

    - M - W T F S
    Search

  2. AC1292

    Vancouver Intl. Airport

    10:20 AM

    YVR

    4h 38m

    Nonstop

    4:58 PM

    IAH

    S M T W T F S

  3. TR804

    Changi Airport

    5:35 PM

    SIN

    6h 25m

    Nonstop

    1:00 AM

    HND

    S - T W T F S
    Search

  4. ZG016

    Narita Intl. Airport

    11:10 AM

    NRT

    11h 45m

    Nonstop

    8:55 AM

    IAH

    S M - W - F -

  5. SQ028

    Changi Airport

    9:00 AM

    SIN

    14h 45m

    Nonstop

    8:45 AM

    SEA

    - M T - T F S
    Search

  6. F93406

    Seattle Tacoma Intl. Airport

    4:27 PM

    SEA

    2h 50m

    Nonstop

    8:17 PM

    DEN

    S - T - T F -

  7. F92996

    Denver International Airport

    9:59 PM

    DEN

    2h 30m

    Nonstop

    1:29 AM

    IAH

    S M T W T F S

  8. OZ752

    Changi Airport

    11:10 PM

    SIN

    6h 35m

    Nonstop

    6:45 AM

    ICN

    S M T W T F S
    Search

  9. OZ202

    Incheon Intl. Airport

    5:10 PM

    ICN

    11h 10m

    Nonstop

    12:20 PM

    LAX

    S M T W T F S

  10. F93292

    Los Angeles Intl. Airport

    10:05 AM

    LAX

    1h 13m

    Nonstop

    11:18 AM

    LAS

    S M T W T F S

  11. F91966

    Harry Reid Intl. Airport

    3:46 PM

    LAS

    3h 14m

    Nonstop

    9:00 PM

    IAH

    - M T - - F -

  12. CA970

    Changi Airport

    11:25 PM

    SIN

    6h 35m

    Nonstop

    6:00 AM

    PEK

    S M T W T F S
    Search

  13. CA985

    Beijing Capital Intl. Airport

    1:00 PM

    PEK

    12h 30m

    Nonstop

    10:30 AM

    SFO

    - - T - - F -

  14. F94158

    San Francisco Intl. Airport

    11:06 AM

    SFO

    1h 44m

    Nonstop

    12:50 PM

    LAS

    S - - W T - S

  15. F91966

    Harry Reid Intl. Airport

    3:46 PM

    LAS

    3h 14m

    Nonstop

    9:00 PM

    IAH

    - M T - - F -

  16. CA976

    Changi Airport

    9:00 AM

    SIN

    6h 15m

    Nonstop

    3:15 PM

    PEK

    S M - W T F S
    Search

  17. CA983

    Beijing Capital Intl. Airport

    10:00 PM

    PEK

    13h 10m

    Nonstop

    8:10 PM

    LAX

    S - - W T - -

  18. F91756

    Los Angeles Intl. Airport

    6:00 AM

    LAX

    3h 32m

    Nonstop

    11:32 AM

    IAH

    S M T W T F S

  19. CA890

    Changi Airport

    5:45 PM

    SIN

    6h 30m

    Nonstop

    12:15 AM

    PEK

    S M T W T F S
    Search

  20. CA985

    Beijing Capital Intl. Airport

    1:00 PM

    PEK

    12h 30m

    Nonstop

    10:30 AM

    SFO

    - - T - - F -

  21. F92486

    San Francisco Intl. Airport

    2:01 PM

    SFO

    1h 43m

    Nonstop

    3:44 PM

    LAS

    S M T W T F S

  22. F94924

    Harry Reid Intl. Airport

    7:34 PM

    LAS

    3h 10m

    Nonstop

    12:44 AM

    IAH

    S - - W T - S

  23. KE648

    Changi Airport

    10:30 AM

    SIN

    6h 40m

    Nonstop

    6:10 PM

    ICN

    S M T W T F S
    Search

  24. KE011

    Incheon Intl. Airport

    7:40 PM

    ICN

    11h 5m

    Nonstop

    1:45 PM

    LAX

    S M T W T F S

  25. F93292

    Los Angeles Intl. Airport

    10:05 AM

    LAX

    1h 13m

    Nonstop

    11:18 AM

    LAS

    S M T W T F S

  26. F91966

    Harry Reid Intl. Airport

    3:46 PM

    LAS

    3h 14m

    Nonstop

    9:00 PM

    IAH

    - M T - - F -

  27. AC020

    Changi Airport

    7:00 AM

    SIN

    14h 25m

    Nonstop

    6:25 AM

    YVR

    - M - W T F S
    Search

  28. AC8806

    Vancouver Intl. Airport

    5:30 PM

    YVR

    1h 7m

    Nonstop

    6:37 PM

    SEA

    S M T W T F S

  29. F94204

    Seattle Tacoma Intl. Airport

    7:47 PM

    SEA

    2h 38m

    Nonstop

    10:25 PM

    LAS

    S - - W T - -

  30. F94924

    Harry Reid Intl. Airport

    7:34 PM

    LAS

    3h 10m

    Nonstop

    12:44 AM

    IAH

    S - - W T - S

  31. JL038

    Changi Airport

    2:20 AM

    SIN

    6h 35m

    Nonstop

    9:55 AM

    HND

    S M T W T F S
    Search

  32. JL7018

    Haneda Airport

    7:45 PM

    HND

    10h

    Nonstop

    1:45 PM

    LAX

    S M T W T F S

  33. F93292

    Los Angeles Intl. Airport

    10:05 AM

    LAX

    1h 13m

    Nonstop

    11:18 AM

    LAS

    S M T W T F S

  34. F91966

    Harry Reid Intl. Airport

    3:46 PM

    LAS

    3h 14m

    Nonstop

    9:00 PM

    IAH

    - M T - - F -
Find more flights and airlines

About Changi Airport and George Bush Intercontinental Airport

Learn about Changi Airport (SIN) and George Bush Intercontinental Airport (IAH) — including location, terminals, transportation, and travel tips.

Flight distance 15,989.17 km
Cheapest one-way ticket price TRY 28,423
Cheapest return ticket price TRY 42,758

FAQs for Changi Airport to George Bush Intercontinental Airport Flights

  • How many daily flights are there from Changi Airport (SIN) to George Bush Intercontinental Airport (IAH)?

    There are around 1 daily flights from Changi Airport (SIN) to George Bush Intercontinental Airport (IAH).
  • The route from Changi Airport (SIN) to George Bush Intercontinental Airport (IAH) is quite popular. Without considering departure times or holidays, tickets cost around TRY 71,496 in March, the most expensive month to book this route.
  • Singapore Airlines is a very popular airline operating an average of 24 flights per month.
  • One-way flights from Changi Airport to George Bush Intercontinental Airport currently start from TRY 28,423, and round-trip fares start from TRY 42,758. The current lowest fare is a Air Canada flight departing on Fri, Nov 13; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Changi Airport to George Bush Intercontinental Airport is TRY 55,229. Prices may vary depending on the departure date, airline, and availability.
  • Enter Changi Airport and George Bush Intercontinental Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.