HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$148+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — ONT
Feb 3 — Feb 101
Tue 2/3
Tue 2/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bellingham to Ontario 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 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 January 4, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 1/311:03 pmBLI - ONT
1 stop7h 33mAlaska Airlines
Sat 2/74:03 pmONT - BLI
1 stop8h 03mAlaska Airlines
Deal found 1/4$261
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 2/61:03 pmBLI - ONT
1 stop10h 53mAlaska Airlines
Sat 2/144:02 pmONT - BLI
1 stop19h 11mAlaska Airlines
Deal found 1/4$265
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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.
Wed 1/281:03 pmBLI - ONT
1 stop7h 33mAlaska Airlines
Thu 2/196:14 amONT - BLI
1 stop4h 59mAlaska Airlines
Deal found 1/4$278
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 2/61:03 pmBLI - ONT
1 stop10h 53mAlaska Airlines
Sun 3/16:14 amONT - BLI
1 stop4h 59mAlaska Airlines
Deal found 1/4$282
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 4/78:15 amBLI - ONT
1 stop12h 08mAlaska Airlines
Tue 4/1410:59 amONT - BLI
1 stop11h 42mAlaska Airlines
Deal found 1/4$283
This Alaska Airlines deal was found by Cheapflights users on 1/2. 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 2/1711:53 amBLI - ONT
1 stop27h 15mAlaska Airlines
Tue 2/246:14 amONT - BLI
1 stop4h 59mAlaska Airlines
Deal found 1/2$284
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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 2/234:19 pmBLI - ONT
1 stop22h 49mAlaska Airlines
Fri 2/274:02 pmONT - BLI
1 stop19h 11mAlaska Airlines
Deal found 1/3$285
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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 3/145:04 pmBLI - ONT
1 stop6h 28mAlaska Airlines
Mon 3/166:14 amONT - BLI
1 stop4h 59mAlaska Airlines
Deal found 1/3$292
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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 7/137:19 pmBLI - ONT
1 stop4h 37mAlaska Airlines
Sat 7/187:48 pmONT - BLI
1 stop4h 21mAlaska Airlines
Deal found 1/3$299
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 4/288:30 amBLI - ONT
1 stop15h 18mAlaska Airlines
Sun 5/36:00 amONT - BLI
1 stop6h 20mAlaska Airlines
Deal found 1/4$300
This Alaska Airlines deal was found by Cheapflights users on 1/4. 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 4/68:15 amBLI - ONT
1 stop12h 08mAlaska Airlines
Tue 4/145:49 pmONT - BLI
1 stop4h 52mAlaska Airlines
Deal found 1/4$303
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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 7/116:00 amBLI - ONT
1 stop5h 19mAlaska Airlines
Sun 7/197:48 pmONT - BLI
1 stop4h 21mAlaska Airlines
Deal found 1/3$308

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 January 4, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$261
(Alaska Airlines)

One-way from

$148
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$279
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. 34% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 4, 2026.
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

Sat 1/31

1:03 pm-8:36 pm

1 stop7h 33m

Ontario

Sat 2/7

11:53 am-12:06 am

1 stop12h 13m

$261

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Fri 2/6

1:03 pm-11:56 pm

1 stop10h 53m

Ontario

Sat 2/14

4:02 pm-11:13 am

1 stop19h 11m

$265

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Wed 1/28

1:03 pm-8:36 pm

1 stop7h 33m

Ontario

Thu 2/19

6:14 am-11:13 am

1 stop4h 59m

$278

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Fri 2/6

1:03 pm-11:56 pm

1 stop10h 53m

Ontario

Sun 3/1

6:14 am-11:13 am

1 stop4h 59m

$282

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Tue 4/7

8:15 am-8:23 pm

1 stop12h 08m

Ontario

Tue 4/14

10:59 am-10:41 pm

1 stop11h 42m

$283

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Sat 2/7

5:15 am-8:36 pm

1 stop15h 21m

Ontario

Fri 2/13

6:14 am-11:13 am

1 stop4h 59m

$285

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Mon 2/23

4:19 pm-3:08 pm

1 stop22h 49m

Ontario

Fri 2/27

4:02 pm-11:13 am

1 stop19h 11m

$285

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Tue 4/28

8:30 am-11:48 pm

1 stop15h 18m

Ontario

Sun 5/3

6:00 am-12:20 pm

1 stop6h 20m

$300

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Tue 2/17

11:53 am-7:14 pm

2 stops7h 21m

Ontario

Tue 2/24

6:14 am-11:13 am

1 stop4h 59m

$313

BellinghamOntario

BLI - ONT

BLIONT

Bellingham

Sat 1/31

1:03 pm-8:36 pm

1 stop7h 33m

Ontario

Mon 2/2

7:00 am-12:06 am

2 stops17h 06m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 18 results
1
2

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 January.
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 December is currently the most expensive (average of $140). 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.

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 January 4, 2026.
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
11,631 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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
11,631 reviews
Alaska Airlines
8.0
Very good
11,631 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

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 $261, Alaska Airlines can have you in Ontario from Bellingham in 7h 33m. 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.

  • 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 December is currently the most expensive (average of $140). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Bellingham to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Los Angeles flights
Seattle to Las Vegas flights
Seattle to San Diego flights
Portland to Las Vegas flights
Seattle to Santa Ana flights
Seattle to Ontario flights
Portland to Los Angeles flights
Seattle to San Francisco flights
Seattle to Palm Springs flights
Everett to Las Vegas flights
Portland to San Francisco flights
Seattle to Burbank flights
Everett to Los Angeles flights
Portland to Palm Springs flights
Everett to San Diego flights
Portland to Ontario flights
Everett to San Francisco flights
Portland to San Diego flights
Seattle to San Jose flights
Portland to Santa Ana flights
Seattle to Long Beach flights
Everett to Santa Ana flights
Spokane to Las Vegas flights
Seattle to Sacramento flights
Portland to Oakland flights
Seattle to Reno flights
Portland to Burbank flights
Spokane to Los Angeles flights
Spokane to San Diego flights
Portland to San Jose flights
Seattle to Oakland flights
Seattle to San Luis Obispo flights
Portland to Sacramento flights
Seattle to Santa Barbara flights
Spokane to San Francisco flights
Spokane to Ontario flights
Seattle to Santa Rosa flights
Spokane to Santa Ana flights
Portland to Reno flights
Seattle to Fresno flights
Portland to Long Beach flights
Spokane to Palm Springs flights
Seattle to Monterey flights
Pasco to San Francisco flights
Pasco to Los Angeles flights
Bellingham to Las Vegas flights
Pasco to Burbank flights
Pasco to Las Vegas flights
Portland to Santa Barbara flights
Pasco to San Diego flights

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 January 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$297Average$450FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.