$401+ Cheap flights from Washington, D.C. (WAS) to Chiang Mai (CNX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — CNX
Oct 25 — Nov 11
Round-trip
1 adult, Economy
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Find cheap flights from Washington, D.C. to Chiang Mai with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington, D.C. to Chiang Mai
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Cheapest flights from Washington, D.C. to Chiang MaiExplore the most affordable flight options available from Washington, D.C. to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.
Explore the most affordable flight options available from Washington, D.C. to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.
This lastminute.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:13 am -
2 stops27h 32m
Mon 11/99:10 am -
1 stop35h 55m
Deal found 9/25![Multiple Airlines logo]()
$819
This Trip.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:50 am -
1 stop22h 55m
Tue 11/109:10 am -
1 stop35h 55m
Deal found 9/22![Multiple Airlines logo]()
$851
This Expedia deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/811:50 am -
1 stop22h 55m
Mon 11/239:10 am -
1 stop35h 55m
Deal found 9/21![Multiple Airlines logo]()
$880
This lastminute.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:13 am -
2 stops27h 32m
Sun 11/812:20 am -
2 stops36h 21m
Deal found 9/25![Korean Air logo]()
$881
This Priceline deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:04 pm -
2 stops43h 41m
Thu 11/129:10 am -
1 stop35h 55m
Deal found 9/21![Multiple Airlines logo]()
$889
This Korean Air deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:13 am -
2 stops27h 32m
Sat 11/712:20 am -
1 stop21h 30m
Deal found 9/25![Korean Air logo]()
$900
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:13 am -
2 stops29h 32m
Sat 11/712:20 am -
2 stops35h 15m
Deal found 9/25![Delta logo]()
$905
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:35 pm -
2 stops57h 45m
Mon 11/239:10 am -
1 stop35h 55m
Deal found 9/21![Multiple Airlines logo]()
$918
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 am -
2 stops28h 45m
Sun 11/2212:20 am -
2 stops33h 27m
Deal found 9/21![Delta logo]()
$922
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 am -
2 stops28h 45m
Sat 11/1412:20 am -
2 stops36h 00m
Deal found 9/24![Delta logo]()
$923
This Priceline deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:08 am -
2 stops28h 37m
Wed 11/1112:20 am -
2 stops32h 21m
Deal found 9/20![Korean Air logo]()
$927
This Gotogate deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:05 am -
2 stops45h 05m
Thu 10/299:10 am -
1 stop35h 55m
Deal found 9/24![Multiple Airlines logo]()
$956
Best flights from Washington, D.C. to Chiang MaiDiscover carefully curated flight deals from Washington, D.C. to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.
Discover carefully curated flight deals from Washington, D.C. to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 am -
2 stops28h 45m
Sun 11/2212:20 am -
2 stops33h 27m
Deal found 9/21![Delta logo]()
$922
This Emirates deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:30 am -
2 stops34h 55m
Sun 1/247:45 pm -
2 stops48h 25m
Deal found 9/22![Emirates logo]()
$1,251
This China Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/88:30 am -
2 stops37h 55m
Mon 3/811:25 am -
2 stops41h 46m
Deal found 9/22![Multiple Airlines logo]()
$1,329
This EVA Air deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:55 pm -
2 stops47h 25m
Wed 1/2711:50 am -
1 stop21h 05m
Deal found 9/21![EVA Air logo]()
$1,368
This FlightHub deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:00 am -
2 stops43h 05m
Sat 10/245:20 pm -
2 stops48h 40m
Deal found 9/23![STARLUX Airlines logo]()
$1,520
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:00 am -
2 stops28h 45m
Sun 11/2212:20 am -
2 stops28h 00m
Deal found 9/21![Delta logo]()
$972
This Emirates deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:30 am -
2 stops34h 55m
Sat 1/237:45 pm -
2 stops48h 25m
Deal found 9/20![Emirates logo]()
$1,305
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:00 am -
2 stops27h 45m
Sun 11/2212:20 am -
2 stops33h 04m
Deal found 9/21![Delta logo]()
$1,202
This SmartFares deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/17:05 am -
2 stops44h 55m
Wed 1/205:00 pm -
2 stops60h 17m
Deal found 9/24![Multiple Airlines logo]()
$1,406
This Emirates deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:30 am -
2 stops34h 55m
Tue 1/2610:10 am -
2 stops34h 00m
Deal found 9/20![Emirates logo]()
$1,311
This Emirates deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:30 am -
2 stops34h 55m
Fri 1/2210:10 am -
2 stops58h 00m
Deal found 9/22![Emirates logo]()
$1,318
This China Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/307:15 am -
3 stops39h 10m
Mon 1/2511:25 am -
2 stops41h 52m
Deal found 9/22![Multiple Airlines logo]()
$1,528
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:11 pm -
2 stops44h 34m
Fri 11/1312:20 am -
2 stops27h 25m
Deal found 9/23![Delta logo]()
$1,428
This FlightHub deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:57 pm -
2 stops28h 28m
Sat 10/2411:35 am -
2 stops41h 22m
Deal found 9/24![Multiple Airlines logo]()
$1,557
This Delta deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:00 am -
2 stops28h 45m
Fri 11/2712:20 am -
2 stops25h 34m
Deal found 9/22![Delta logo]()
$1,622
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:00 am -
2 stops27h 45m
Fri 11/2712:20 am -
2 stops30h 05m
Deal found 9/23![Delta logo]()
$1,622
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:20 pm -
2 stops40h 25m
Fri 11/2712:20 am -
2 stops33h 14m
Deal found 9/21![Delta logo]()
$1,692
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:02 pm -
2 stops41h 43m
Fri 11/2712:20 am -
2 stops32h 21m
Deal found 9/23![Delta logo]()
$1,692
Last-minute flights from Washington, D.C. to Chiang MaiDiscover last-minute flight deals from Washington, D.C. to Chiang Mai. Data last updated September 25, 2026 and is based on user searches.
Discover last-minute flight deals from Washington, D.C. to Chiang Mai. Data last updated September 25, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:05 am -
2 stops35h 15m
Wed 10/142:35 pm -
2 stops29h 10m
Deal found 9/22![Multiple Airlines logo]()
$1,069
This FlightHub deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:15 pm -
2 stops28h 10m
Wed 10/1411:35 am -
2 stops28h 45m
Deal found 9/22![Multiple Airlines logo]()
$1,292
This oojo deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:00 pm -
2 stops27h 15m
Sat 10/2411:55 am -
2 stops32h 15m
Deal found 9/22![Multiple Airlines logo]()
$1,103
This FlightHub deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:00 am -
2 stops43h 05m
Sat 10/245:20 pm -
2 stops48h 40m
Deal found 9/23![STARLUX Airlines logo]()
$1,520
This Globehunters deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:02 am -
2 stops46h 03m
Sat 10/245:20 pm -
2 stops47h 00m
Deal found 9/23![Multiple Airlines logo]()
$1,527
This Mytrip deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:10 pm -
3 stops29h 45m
Wed 10/289:10 am -
1 stop35h 55m
Deal found 9/22![Multiple Airlines logo]()
$1,101
This EVA Air deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:15 pm -
2 stops29h 10m
Wed 10/2811:50 am -
2 stops28h 30m
Deal found 9/22![Multiple Airlines logo]()
$1,504
This Gotogate deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:05 am -
2 stops45h 05m
Thu 10/299:10 am -
1 stop35h 55m
Deal found 9/24![Multiple Airlines logo]()
$956
This lastminute.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:13 am -
2 stops27h 32m
Mon 11/99:10 am -
1 stop35h 55m
Deal found 9/25![Multiple Airlines logo]()
$819
This lastminute.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:13 am -
2 stops27h 32m
Sun 11/812:20 am -
2 stops36h 21m
Deal found 9/25![Korean Air logo]()
$881
This Korean Air deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:13 am -
2 stops27h 32m
Sat 11/712:20 am -
1 stop21h 30m
Deal found 9/25![Korean Air logo]()
$900
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:13 am -
2 stops29h 32m
Sat 11/712:20 am -
2 stops35h 15m
Deal found 9/25![Delta logo]()
$905
One-way flights from Washington, D.C. to Chiang MaiSearch for one-way flight options from Washington, D.C. to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
Search for one-way flight options from Washington, D.C. to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2711:35 pm -
2 stops45h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:35 pm -
2 stops58h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$410
This Korean Air deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:50 am -
1 stop22h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Korean Air logo]()
$427
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:00 am -
2 stops27h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Delta logo]()
$455
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:00 am -
2 stops28h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Delta logo]()
$480
This Korean Air deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:20 pm -
2 stops40h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Korean Air logo]()
$482
This Korean Air deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/287:59 am -
2 stops26h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Korean Air logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:35 pm -
2 stops42h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:35 pm -
2 stops42h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:15 pm -
3 stops31h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$559
This Korean Air deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:59 am -
2 stops27h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Korean Air logo]()
$582
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:00 am -
2 stops28h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Delta logo]()
$605
Find flight deals from Washington, D.C. to Chiang Mai
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $851 (Trip.com) |
One-way from | $401 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $1,252 |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. to Chiang Mai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 25, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Chiang Mai that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Tue 11/10
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$427
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Fri 11/27
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$477
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Thu 11/12
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$477
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Fri 11/13
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$477
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Sat 11/28
11:50 am-10:45 pm
1 stop22h 55m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$477
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Sat 11/28
6:00 am-10:45 pm
2 stops28h 45m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$480
Washington, D.C.Chiang Mai
DCA Washington, D.C. Reagan-National - CNX Chiang Mai
DCACNX
Washington, D.C. Reagan-National
Sat 11/28
7:59 am-10:45 pm
2 stops26h 46m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$482
Washington, D.C.Chiang Mai
DCA Washington, D.C. Reagan-National - CNX Chiang Mai
DCACNX
Washington, D.C. Reagan-National
Fri 11/27
7:00 am-10:45 pm
2 stops27h 45m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$482
Washington, D.C.Chiang Mai
IAD Washington, D.C. Dulles Intl - CNX Chiang Mai
IADCNX
Washington, D.C. Dulles Intl
Sun 11/15
6:00 am-10:45 pm
2 stops28h 45m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$505
Washington, D.C.Chiang Mai
DCA Washington, D.C. Reagan-National - CNX Chiang Mai
DCACNX
Washington, D.C. Reagan-National
Wed 9/30
1:15 pm-7:30 am
3 stops31h 15m
Chiang Mai
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
$559
Showing 1-10 of 43 resultsSorted by cheapest first
Compare providers for flights from Washington, D.C. to Chiang Mai
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Chiang Mai in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C.-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Chiang Mai flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C.-Chiang Mai flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Washington, D.C. to Chiang Mai
Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Washington, D.C. with our price prediction graph.
WAS-CNX
IAD-CNX
DCA-CNX
BWI-CNX
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to Chiang Mai
WAS-CNX
IAD-CNX
DCA-CNX
BWI-CNX
What is the cheapest month to book a flight from Washington, D.C. to Chiang Mai?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Chiang Mai (average of $1,128). Flying from Washington, D.C. to Chiang Mai in May is currently the most expensive (average of $1,634). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Washington, D.C. to Chiang Mai?
Airfare is below average for this route at the moment.
Washington, D.C. to Chiang Mai flights typically cost between $1,202 and $1,387 in October.The cheapest round-trip price found within the last 5 days was $819 on Multiple Airlines (Oct 26-Nov 9).
Reviews of airlines servicing Chiang Mai
Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated September 25, 2026.
See what other customers who have flown with EVA Air,Korean Air, andDelta from Washington, D.C. to Chiang Mai have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.5
Boarding
8.4
Crew
8.7
Entertainment
8.0
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Overall
8.5
Boarding
8.4
Crew
8.7
Entertainment
8.0
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Overall
8.5
Boarding
8.4
Crew
8.7
Entertainment
8.0
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Overall
8.5
Boarding
8.4
Crew
8.7
Entertainment
8.0
Food
8.1
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentDaisy,May 2026
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Chiang Mai
Explore flights to Chiang Mai departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.
Complete your trip
Complete your trip to Chiang Mai by adding a car rental and/or hotel reservation to your travel itinerary.
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Washington, D.C. and Chiang Mai flights
Browse other Washington, D.C. and Chiang Mai flight options. Last updated on September 25, 2026.
Other flights from Washington, D.C.
Browse through other flights departing from Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.
Popular flight searches
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Washington, D.C. to Chiang Mai flights
Consider these flights traveling from Washington, D.C. to Chiang Mai.
Top 3 airlines flying from Washington, D.C. to Chiang Mai
Discover the top 3 airlines that operate flights from Washington, D.C. to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$754 | Average$1,269 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,040 | Average$1,296 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,117 | Average$1,383 | FlexibilityNo cancel fee | On-timeN/A |