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$146+ Cheap flights from Bellingham to Ontario (BLI - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — ONT
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
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Cheap flight deals from Bellingham to Ontario

Cheapest flights from Bellingham to Ontario
Explore the most affordable flight options available from Bellingham to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
Thu 12/187:30 amBLI - ONT
1 stop9h 52mMultiple Airlines
Fri 12/196:00 amONT - BLI
1 stop17h 21mMultiple Airlines
Deal found 12/7$300
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:20 amBLI - ONT
1 stop5h 59mAlaska Airlines
Wed 12/176:00 amONT - BLI
1 stop6h 24mAlaska Airlines
Deal found 12/6$424
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
Tue 12/237:30 amBLI - ONT
1 stop9h 52mMultiple Airlines
Sat 12/276:00 amONT - BLI
1 stop7h 42mMultiple Airlines
Deal found 12/8$426
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/144:21 pmBLI - ONT
1 stop7h 08mAlaska Airlines
Sat 12/204:36 pmONT - BLI
1 stop7h 40mAlaska Airlines
Deal found 12/6$450
This Alaska Airlines deal was found by Cheapflights users on 12/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/154:21 pmBLI - ONT
1 stop7h 08mAlaska Airlines
Wed 12/244:36 pmONT - BLI
1 stop7h 40mAlaska Airlines
Deal found 12/7$451
This KAYAK deal was found by Cheapflights users on 12/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:04 pmBLI - ONT
1 stop5h 29mAlaska Airlines
Wed 12/176:00 amONT - BLI
1 stop6h 24mAlaska Airlines
Deal found 12/8$456
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:04 pmBLI - ONT
1 stop5h 29mAlaska Airlines
Fri 12/197:19 pmONT - BLI
1 stop4h 57mAlaska Airlines
Deal found 12/6$476
This Alaska Airlines deal was found by Cheapflights users on 12/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/144:21 pmBLI - ONT
1 stop7h 08mAlaska Airlines
Thu 12/186:00 amONT - BLI
1 stop6h 16mAlaska Airlines
Deal found 12/8$490
This Alaska Airlines deal was found by Cheapflights users on 12/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/151:04 pmBLI - ONT
1 stop5h 29mAlaska Airlines
Fri 12/267:19 pmONT - BLI
1 stop4h 57mAlaska Airlines
Deal found 12/7$502
This Trip.com deal was found by Cheapflights users on 12/7. 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.
Mon 12/89:00 amBLI - ONT
1 stop12h 17mMultiple Airlines
Fri 12/126:15 amONT - BLI
1 stop8h 57mMultiple Airlines
Deal found 12/7$525
This Alaska Airlines deal was found by Cheapflights users on 12/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:04 pmBLI - ONT
1 stop5h 29mAlaska Airlines
Tue 12/166:00 amONT - BLI
1 stop6h 24mAlaska Airlines
Deal found 12/8$527

Find flight deals from Bellingham to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Bellingham (BLI) to Ontario (ONT). 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 December 9, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$261
(Trip.com)

One-way from

$146
(Trip.com)

Popular in

March

Cheapest in

July

Average price

$276
Provider with most accurate pricing for Bellingham-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bellingham-Ontario flights.
Search Deals
From Bellingham to Ontario
Search Deals
One-way flight from Bellingham to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bellingham to Ontario 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 2,558,603 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from Bellingham to Ontario that are best for you.

Fly from

Bellingham

Fly to

Ontario

Route

Depart

Return

Price

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Mon 1/5

6:00 am-5:15 pm

1 stop11h 15m

Ontario

Wed 1/7

4:03 pm-9:20 pm

1 stop5h 17m

$261

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Fri 1/2

5:20 am-9:50 am

1 stop4h 30m

Ontario

Wed 1/7

4:03 pm-9:20 pm

1 stop5h 17m

$292

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Thu 1/8

9:15 am-3:08 pm

1 stop5h 53m

Ontario

Sat 1/10

4:03 pm-9:20 pm

1 stop5h 17m

$292

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Fri 1/2

5:20 am-9:50 am

1 stop4h 30m

Ontario

Tue 1/6

4:36 pm-10:22 pm

1 stop5h 46m

$292

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Fri 1/2

5:20 am-9:50 am

1 stop4h 30m

Ontario

Sat 1/10

4:03 pm-9:20 pm

1 stop5h 17m

$292

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Fri 1/2

5:20 am-9:50 am

1 stop4h 30m

Ontario

Thu 1/8

6:00 am-12:23 pm

1 stop6h 23m

$302

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Mon 1/5

12:56 pm-6:25 pm

1 stop5h 29m

Ontario

Wed 1/7

1:46 pm-12:06 am

2 stops10h 20m

$366

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Sun 1/4

5:20 am-9:50 am

1 stop4h 30m

Ontario

Wed 1/7

4:03 pm-9:20 pm

1 stop5h 17m

$372

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Sun 1/4

5:20 am-9:50 am

1 stop4h 30m

Ontario

Tue 1/6

7:19 pm-12:16 am

1 stop4h 57m

$372

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Sun 1/4

5:20 am-9:50 am

1 stop4h 30m

Ontario

Thu 1/8

6:00 am-12:23 pm

1 stop6h 23m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Bellingham to Ontario

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 Bellingham to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Bellingham-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bellingham-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bellingham-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bellingham-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Bellingham-Ontario 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 Bellingham to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Bellingham with our price prediction graph.
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 Bellingham to Ontario

What is the cheapest month to book a flight from Bellingham to Ontario?

Currently, June is the cheapest month in which you can book a flight from Bellingham to Ontario (average of $63). Flying from Bellingham to Ontario in August is currently the most expensive (average of $136). 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.

What is the cheapest time of day to fly from BLI to ONT?

Find hourly flight availability from Bellingham to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.

It’s typically best to fly out from Bellingham to Ontario in the evening. Doing so could potentially save you 44% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated December 9, 2025.
Read through reviews of airlines operating flights from Bellingham to Ontario, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,419 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,419 reviews
Alaska Airlines
8.0
Very good
11,419 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Bellingham to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Bellingham to Ontario?

    For as low as $292, Alaska Airlines can have you in Ontario from Bellingham in 4h 30m. The distance between Bellingham and Ontario is about 1049 mi.

  • What is the cheapest airline to fly from Bellingham to Ontario round-trip?

    Cheapflights users have booked flights from Bellingham to Ontario round-trip from $297. Users have found that Alaska Airlines is 23% cheaper than the other options available to this destination.

  • Can I find deals for flights from Bellingham to Ontario that include hotel bookings?

    Yes. In addition to deals on Bellingham to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bellingham to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bellingham to Ontario.

  • Can I find deals for business class flights from Bellingham to Ontario?

    Yes. Cheapflights offers flight deals from Bellingham to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Bellingham to Ontario?

    Currently, June is the cheapest month in which you can book a flight from Bellingham to Ontario (average of $63). Flying from Bellingham to Ontario in August is currently the most expensive (average of $136). 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.

See more FAQs

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Top airline flying from Bellingham to Ontario

Discover the top airline that operate flights from Bellingham to Ontario. 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 2,558,603 searches. Data last updated December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$297Average$450FlexibilityNo cancel feeOn-time75%

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