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Flights from Washington D.C. to Bangkok

Find flight deals from Washington D.C. to Bangkok for the next 3 months. Book one way flights from $385 or round trip flights from $903.

      • IAD 3:10 PM
        28h 35m
        1 stop
        BKK 6:45 AM
        Washington D.C. - Bangkok | Mon, Sep 7 | Etihad Airways
        BKK 3:15 AM
        41h 30m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Mon, Sep 14 | Etihad Airways
        $903 $1,305
        31% off
        31% off
        $1,305 $903
      • IAD 3:10 PM
        34h
        1 stop
        BKK 12:10 PM
        Washington D.C. - Bangkok | Wed, Sep 9 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Wed, Sep 16 | Etihad Airways
        $903 $1,305
        31% off
        31% off
        $1,305 $903
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Tue, Sep 8 | Etihad Airways
        BKK 3:15 AM
        41h 30m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Mon, Sep 14 | Etihad Airways
        $903 $1,305
        31% off
        31% off
        $1,305 $903
      • IAD 3:10 PM
        34h
        1 stop
        BKK 12:10 PM
        Washington D.C. - Bangkok | Thu, Sep 10 | Etihad Airways
        BKK 3:15 AM
        41h 30m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Thu, Sep 17 | Etihad Airways
        $903
        31% off
        $1,305 $903
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Wed, Aug 26 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Mon, Aug 31 | Etihad Airways
        $939
        28% off
        $1,305 $939
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Tue, Aug 25 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Mon, Aug 31 | Etihad Airways
        $939
        28% off
        $1,305 $939
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Mon, Aug 24 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Mon, Aug 31 | Etihad Airways
        $939
        28% off
        $1,305 $939
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Thu, Sep 3 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Thu, Sep 10 | Etihad Airways
        $939
        28% off
        $1,305 $939
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Wed, Sep 2 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Tue, Sep 8 | Etihad Airways
        $939
        28% off
        $1,305 $939
      • IAD 3:10 PM
        34h
        1 stop
        BKK 12:10 PM
        Washington D.C. - Bangkok | Tue, Sep 1 | Etihad Airways
        BKK 3:55 PM
        28h 50m
        1 stop
        IAD 9:45 AM
        Bangkok - Washington D.C. | Tue, Sep 8 | Etihad Airways
        $939
        28% off
        $1,305 $939
      • WAS 1:00 PM
        17h 25m
        1 stop
        BKK 2:00 PM
        Washington D.C. - Bangkok | Thu, Jul 16 | Normal Airline
        BKK 3:00 PM
        6h
        Nonstop
        WAS 4:00 PM
        Bangkok - Washington D.C. | Sat, Jul 18 | Normal Airline
        Find more flights
        Find more flights
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Sun, Jul 26 | Air Premia
        $385 $620
        38% off
        38% off
        $620 $385
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Fri, Jul 31 | Air Premia
        $385 $620
        38% off
        38% off
        $620 $385
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Wed, Aug 19 | Air Premia
        $397 $620
        36% off
        36% off
        $620 $397
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Sun, Aug 2 | Air Premia
        $404
        35% off
        $620 $404
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Wed, Aug 5 | Air Premia
        $405
        35% off
        $620 $405
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Wed, Aug 26 | Air Premia
        $408
        34% off
        $620 $408
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Fri, Aug 28 | Air Premia
        $408
        34% off
        $620 $408
      • IAD 1:20 PM
        44h 50m
        1 stop
        BKK 9:10 PM
        Washington D.C. - Bangkok | Sun, Aug 23 | Air Premia
        $411
        34% off
        $620 $411
      • IAD 3:10 PM
        28h 35m
        1 stop
        BKK 6:45 AM
        Washington D.C. - Bangkok | Wed, Aug 19 | Etihad Airways
        $435
        30% off
        $620 $435
      • IAD 3:10 PM
        21h 45m
        1 stop
        BKK 11:55 PM
        Washington D.C. - Bangkok | Thu, Sep 3 | Etihad Airways
        $446
        28% off
        $620 $446
      • WAS 1:00 PM
        17h 25m
        1 stop
        BKK 2:00 PM
        Washington D.C. - Bangkok | Thu, Jul 16 | Normal Airline
        Find more flights
        Find more flights

Find cheap airlines flights from Washington D.C. to Bangkok

You can choose from 8 airlines that fly from Washington D.C. to Bangkok, including Etihad Airways, Qatar Airways, and Air Premia. Air Premia has lowest fares on this route.
Etihad Airways logo Etihad Airways
Qatar Airways logo Qatar Airways
Air Premia logo Air Premia
Korean Air logo Korean Air
Turkish Airlines logo Turkish Airlines
United Airlines logo United Airlines
Lufthansa logo Lufthansa
EVA Air logo EVA Air
Airlines are determined based on actual purchased flight tickets from Washington D.C. to Bangkok according to previous 12 months data from Trip.com.

Flight Info | Washington D.C. to Bangkok

The distance between Washington D.C. and Bangkok is approximately 14,158.76 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight price$385
Cheapest round-trip ticket price$903
Off-season for travelSeptember
Peak season for travelJuly
Flight distance14,158.76 km
Popular airlineEtihad Airways
Flight statistics for the Washington D.C.–Bangkok route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from Washington D.C. to Bangkok

Which month has the cheapest one-way flights from Washington D.C. to Bangkok?

The average price of one-way flights from Washington D.C. to Bangkok purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Washington D.C. to Bangkok is October, with an average price of $555; while the month with the highest flight price is usually December, with an average price of up to $1,082.

$1,082
$819
$555
$292
    Cheapest
  • $621
    Jul
  • $575
    Aug
  • $639
    Sep
  • $555
    Oct
  • $558
    Nov
  • $1,082
    Dec
  • $618
    Jan
  • $606
    Feb
  • $683
    Mar
  • $675
    Apr
  • $654
    May
  • $925
    Jun

What is the cheapest month for round-trip flights from Washington D.C. to Bangkok?

Average price of round-trip flights from Washington D.C. to Bangkok purchased by Trip.com users by month over the past 12 months

According to historical data from Trip.com, the lowest prices for flights from Washington D.C. to Bangkok are found during October, with an average price of $933. Conversely, the highest prices are found during December, with an average price of up to $1,708.

$1,708
$1,321
$933
$546
    Cheapest
  • $1,504
    Jul
  • $1,254
    Aug
  • $1,087
    Sep
  • $933
    Oct
  • $1,053
    Nov
  • $1,708
    Dec
  • $1,216
    Jan
  • $1,095
    Feb
  • $1,190
    Mar
  • $973
    Apr
  • $1,430
    May
  • $1,563
    Jun

Frequently Asked Questions

  • What are the cheapest flights from Washington D.C. to Bangkok (WAS-BKK)?

    Based on Trip.com data, Air Premia offers one-way fares as low as $385 on Cheapest nonstop routes (e.g. IAD to BKK on Sun, Jul 26), while Etihad Airways offers Cheapest nonstop round-trips from $903 departing on Mon, Sep 7 and returning on Mon, Sep 14.
  • At the moment, you can catch a nonstop flight from Washington D.C. to Bangkok with the following airlines, including: Etihad Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Washington D.C. to Bangkok is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Washington D.C. to Bangkok, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Jul 26, with one-way flights priced at just $385.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Premia.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Bangkok travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Washington D.C. to Bangkok is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Washington D.C. to Bangkok on July 29, 2026 with Etihad Airways, with prices starting at $956.
  • You can land at any one of the following hubs in Bangkok, with Dulles International Airport to Suvarnabhumi Airport (IAD-BKK) is by far the most common option on this route: Suvarnabhumi Airport (BKK) Don Mueang International Airport (DMK).
  • The time difference between Bangkok and Washington D.C. is 12h.
  • Tickets can only be changed or canceled if permitted by airline policy. 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. However, 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.

Explore More Popular Flights

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.