Cheap flights from Bangkok, Thailand to Ontario, CA

Flights starting at £390. Choose between Frontier Airlines, China Airlines, or Alaska Airlines to find the best price.

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Travelers usually depart from Suvarnabhumi, Don Mueang International, Bangkok - Travel Mart, Bangkok - Southern Terminal, or Bangkok - Morchit 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 Frontier Airlines, China Airlines, Alaska Airlines, American Airlines, and Hawaiian Airlines. Bangkok and Ontario have 223 direct flights per week.

Check-in for a flight from Bangkok to Ontario

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
China AirlinesCALCIYesOpens 48 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
American AirlinesAALAANoNo
Hawaiian AirlinesHALHANoNo

United States COVID-19 travel restrictions

Your trip summary

Departure

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

Return

Visa requirements
  • Visitor visa
Forms and documents
  • Proof of COVID-19 vaccination is not required for Thailand
  • Mandatory health insurance for travelers with a certain travel history

Frequently asked questions

What are the most popular routes to and from Bangkok?
What are the most popular routes to and from Ontario?
Which airports are there in Bangkok?
What airports are near Bangkok?
What airports are near Ontario?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Bangkok and Ontario?
What is Virtual Interlining and how do I use it?
Which airlines fly between Bangkok and Ontario?
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?
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?

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