Cheap flights from Bangkok to Ontario, CA

Flights starting at £419. Choose between United Airlines, Frontier Airlines, or Thai Airways International to find the best price.

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One-way trips

Updated:

Round trips

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Bangkok BKKHanoi HANOsaka KIXSan Francisco SFOTaipei TPEBangkok BKK

Multiple carriers

£1197
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Bangkok BKKHanoi HANOsaka KIXSan Francisco SFOTaipei TPEBangkok BKK

Multiple carriers

£1170

Updated:

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Travelers usually depart from Suvarnabhumi, Don Mueang International, Bangkok - Morchit, Bangkok - Travel Mart, or Bangkok - Southern Terminal when they travel from Bangkok to Ontario. Book your trip to arrive at Ontario International, Montclair (Ontario), Ontario Bus Stop, or Ontario, CA station. The most popular airlines for this route are United Airlines, Frontier Airlines, Thai Airways International, Delta Air Lines, and Thai AirAsia. Bangkok and Ontario have 401 direct flights per week.

Check-in for a flight from Bangkok to Ontario

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Thai Airways InternationalTHATGNo0
0
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
Thai AirAsiaAIQFDYes0
0

United States COVID-19 travel restrictions

Latest COVID-19 travel restrictions in United States – 12/2022
Your trip summary

Most travelers from Thailand can enter Ontario, ONT, but there are restrictions.

Departure

Travel restrictions
  • Travel is allowed with restrictions for vaccinated travelers
  • Proof of negative pre-departure COVID-19 test results or recovery certificate is not required for United States
  • Quarantine is not required for vaccinated travelers
Visa requirements
  • Visitor visa
Forms and documents
  • Mandatory proof of COVID-19 vaccination for United States
  • Mandatory travel attestation form

Return

Travel restrictions
  • Travel is allowed
  • Proof of negative pre-departure COVID-19 test results is not required
  • Quarantine is not required
Visa requirements
  • Visitor visa

Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.

Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

What are the most popular routes to and from Bangkok?
Travelers frequently search for route combinations, such as Bangkok and Chiang Mai, Phuket City, Krabi, Hat Yai, Nakhon Si Thammarat Province, Surat Thani Province, Chiang Rai Province, Khon Kaen, Seoul, Udon Thani, Tokyo, Ubon Ratchathani Province, Singapore, Phitsanulok, London, Ko Samui, Sydney, Nan Province, Denpasar, Ho Chi Minh City.
What are the most popular routes to and from Ontario?
Travelers frequently search for route combinations, such as Ontario and London, New York, San Francisco, Denver, Sacramento, Taipei, Manila, Toronto, Calgary, Seattle, Las Vegas, San Jose, Orlando, Houston, Macau, Los Angeles, Washington, D.C., El Paso, Edmonton, Guadalajara.
Which airports are there in Bangkok?
Bangkok is mainly served by Suvarnabhumi. But there are other airports nearby, including Don Mueang International.
What airports are near Bangkok?
The main airport in Bangkok is Suvarnabhumi. It is also served by U-Tapao International, Hua Hin.
What airports are near Ontario?
The main airport in Ontario is Ontario International. It is also served by San Diego International, Tijuana International, Ontario International, John Wayne, Hollywood Burbank, Palm Springs International, Imperial County, Santa Barbara Municipal, McClellan–Palomar, Long Beach.
What buses and trains depart from Bangkok?
A number of bus and train companies depart from Bangkok, including Bangkok Busline, Sombat Tour, Thai Railway.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Bangkok and Ontario?
Yes, it's possible to combine different modes of transport between Bangkok and Ontario thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Bangkok and Ontario can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.
Which airlines fly between Bangkok and Ontario?
Currently, you can fly between Bangkok and Ontario with United Airlines, Frontier Airlines, Thai Airways International, Delta Air Lines, Thai AirAsia.
When's the best time to travel between Bangkok and Ontario?
What flights operate between Bangkok and Ontario?
How many airports are there near Bangkok?
How many airports are there near Ontario?
Is it possible to reach Bangkok by bus or train?
What time do nonstop (direct) flights between Bangkok and Ontario depart?
What time do nonstop (direct) flights between Bangkok and Ontario arrive?
What time do flights between Bangkok and Ontario depart?
What time do flights between Bangkok and Ontario arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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