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Flights from Osaka to Siem Reap

Find flight deals from Osaka to Siem Reap for the next 3 months. Book one way flights from $190 or round trip flights from $376.

      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Sun, Jun 14 | VietJet Air
        SAI 7:05 PM
        10h 45m
        1 stop
        KIX 7:50 AM
        Siem Reap - Osaka | Fri, Jun 19 | VietJet Air
        $376 $488
        23% off
        23% off
        $488 $376
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Mon, Jun 8 | VietJet Air
        SAI 7:05 PM
        17h 25m
        1 stop
        KIX 2:30 PM
        Siem Reap - Osaka | Wed, Jun 10 | VietJet Air
        $376 $488
        23% off
        23% off
        $488 $376
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Wed, Jun 10 | VietJet Air
        SAI 7:05 PM
        17h 25m
        1 stop
        KIX 2:30 PM
        Siem Reap - Osaka | Fri, Jun 12 | VietJet Air
        $384 $488
        21% off
        21% off
        $488 $384
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Wed, Jul 1 | VietJet Air
        SAI 7:05 PM
        17h 25m
        1 stop
        KIX 2:30 PM
        Siem Reap - Osaka | Mon, Jul 6 | VietJet Air
        $387
        21% off
        $488 $387
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Wed, Jul 8 | VietJet Air
        SAI 7:05 PM
        17h 25m
        1 stop
        KIX 2:30 PM
        Siem Reap - Osaka | Wed, Jul 15 | VietJet Air
        $389
        20% off
        $488 $389
      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Sat, Jul 11 | VietJet Air
        SAI 7:05 PM
        10h 45m
        1 stop
        KIX 7:50 AM
        Siem Reap - Osaka | Wed, Jul 15 | VietJet Air
        $391
        20% off
        $488 $391
      • KIX 7:55 PM
        17h 15m
        1 stop
        SAI 11:10 AM
        Osaka - Siem Reap | Mon, Jul 6 | Thai AirAsia X
        SAI 4:55 PM
        14h 15m
        1 stop
        KIX 9:10 AM
        Siem Reap - Osaka | Sat, Jul 11 | Thai AirAsia
        $394
        19% off
        $488 $394
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Mon, Jun 29 | VietJet Air
        SAI 7:05 PM
        17h 25m
        1 stop
        KIX 2:30 PM
        Siem Reap - Osaka | Fri, Jul 3 | VietJet Air
        $396
        19% off
        $488 $396
      • KIX 7:55 PM
        17h 15m
        1 stop
        SAI 11:10 AM
        Osaka - Siem Reap | Wed, Jul 8 | Thai AirAsia X
        SAI 4:55 PM
        14h 15m
        1 stop
        KIX 9:10 AM
        Siem Reap - Osaka | Sun, Jul 12 | Thai AirAsia
        $398
        18% off
        $488 $398
      • KIX 7:55 PM
        17h 15m
        1 stop
        SAI 11:10 AM
        Osaka - Siem Reap | Sun, Jul 12 | Thai AirAsia X
        SAI 4:55 PM
        14h 15m
        1 stop
        KIX 9:10 AM
        Siem Reap - Osaka | Sat, Jul 18 | Thai AirAsia
        $400
        18% off
        $488 $400
      • OSA 1:00 PM
        17h 25m
        1 stop
        SAI 2:00 PM
        Osaka - Siem Reap | Fri, May 22 | Normal Airline
        SAI 3:00 PM
        6h
        Nonstop
        OSA 4:00 PM
        Siem Reap - Osaka | Sun, May 24 | Normal Airline
        Find more flights
        Find more flights
      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Thu, Jul 9 | VietJet Air
        $190 $265
        28% off
        28% off
        $265 $190
      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Thu, Jul 2 | VietJet Air
        $191 $265
        28% off
        28% off
        $265 $191
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Fri, Jul 10 | VietJet Air
        $191 $265
        28% off
        28% off
        $265 $191
      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Sat, Jul 11 | VietJet Air
        $191
        28% off
        $265 $191
      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Tue, Jul 7 | VietJet Air
        $193
        27% off
        $265 $193
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Wed, Jul 8 | VietJet Air
        $194
        27% off
        $265 $194
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Tue, Jul 14 | VietJet Air
        $197
        26% off
        $265 $197
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Thu, Jun 25 | VietJet Air
        $216
        18% off
        $265 $216
      • KIX 9:20 AM
        10h 45m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Mon, Jul 6 | VietJet Air
        $216
        18% off
        $265 $216
      • KIX 3:30 PM
        28h 35m
        1 stop
        SAI 6:05 PM
        Osaka - Siem Reap | Sun, Jul 12 | VietJet Air
        $217
        18% off
        $265 $217
      • OSA 1:00 PM
        17h 25m
        1 stop
        SAI 2:00 PM
        Osaka - Siem Reap | Fri, May 22 | Normal Airline
        Find more flights
        Find more flights

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

Frequently Asked Questions

  • What are the cheapest flights from Osaka to Siem Reap (OSA-SAI)?

    Based on Trip.com data, VietJet Air offers one-way fares as low as $190 on Cheapest nonstop routes (e.g. KIX to SAI on Thu, Jul 9), while VietJet Air offers Cheapest nonstop round-trips from $376 departing on Sun, Jun 14 and returning on Fri, Jun 19.
  • At the moment, several airlines serve connecting flights from Osaka to Siem Reap, including: Vietnam Airlines VietJet Air Selected airlines are based on historical data collected from flight bookings made by users 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 Osaka to Siem Reap 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 Osaka to Siem Reap, 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 Thu, Jul 9, with one-way flights priced at just $190.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is VietJet Air.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Get exclusive promo codes for Trip.com app users.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Osaka to Siem Reap on May 21, 2026 with VietJet Air, with prices starting at $138.
  • You can land at any one of the following hubs in Siem Reap, with Kansai International Airport to Siem Reap Angkor International Airport (KIX-SAI) is by far the most common option on this route: Siem Reap Angkor International Airport (SAI).
  • The time difference between Siem Reap and Osaka is 2h.
  • 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.

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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.