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Cheap flights from Bellingham to San Diego from C$ 255

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
BLI — SAN
31 Mar — 7 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Bellingham to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Bellingham to San Diego
Explore the most affordable flight options available from Bellingham to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 March 2026.

Sat 25/44:01 p.m.
BLI
-
SAN
1 stop4h 15m
Alaska Airlines
Sat 2/57:00 a.m.
SAN
-
BLI
1 stop8h 21m
Alaska Airlines
Deal found 25/2C$ 318
Mon 9/33:04 p.m.
BLI
-
SAN
1 stop22h 09m
Multiple Airlines
Tue 31/32:08 p.m.
SAN
-
BLI
1 stop28h 44m
Multiple Airlines
Deal found 26/2C$ 330
Tue 21/48:15 a.m.
BLI
-
SAN
1 stop8h 50m
Alaska Airlines
Sat 25/47:00 a.m.
SAN
-
BLI
1 stop8h 21m
Alaska Airlines
Deal found 28/2C$ 331
Mon 9/33:04 p.m.
BLI
-
SAN
1 stop22h 09m
Multiple Airlines
Thu 2/48:06 a.m.
SAN
-
BLI
2 stops28h 04m
Multiple Airlines
Deal found 26/2C$ 333
Mon 16/31:04 p.m.
BLI
-
SAN
1 stop24h 09m
Multiple Airlines
Tue 31/32:08 p.m.
SAN
-
BLI
1 stop28h 44m
Multiple Airlines
Deal found 26/2C$ 345
Sun 8/31:04 p.m.
BLI
-
SAN
1 stop27h 09m
Multiple Airlines
Tue 31/32:08 p.m.
SAN
-
BLI
1 stop28h 44m
Multiple Airlines
Deal found 26/2C$ 355
Sun 8/31:04 p.m.
BLI
-
SAN
1 stop27h 09m
Multiple Airlines
Thu 2/48:06 a.m.
SAN
-
BLI
2 stops28h 04m
Multiple Airlines
Deal found 26/2C$ 357
Fri 17/48:15 a.m.
BLI
-
SAN
1 stop15h 49m
Alaska Airlines
Tue 21/47:00 a.m.
SAN
-
BLI
1 stop15h 50m
Alaska Airlines
Deal found 28/2C$ 359

Find flight deals from Bellingham to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Bellingham (BLI) to San Diego (SAN). 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 1 March 2026.

Round-trip from

C$ 318

One-way from

C$ 255

Popular in

September

Cheapest in

December

Average price

C$ 484

Good round-trip deal

C$ 438 or less
Alaska Airlines
  • Alaska Airlines
  • 25/4-2/5
  • 2 total stops
  • 12h 36m total
  • Bellingham to San Diego
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 22/4
  • 1 total stop
  • 5h 41m total
  • Bellingham to San Diego
Search Deals
Highest demand for flights based on searches. 31% potential increase in price (C$ 286 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease (C$ 79 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Bellingham to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bellingham to San Diego 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 629,999 searches. Data last updated 1 March 2026.
Use the filters below to find and compare flights from Bellingham to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Sat 25/4

4:01 p.m.-8:16 p.m.

1 stop4h 15m

San Diego

Sat 2/5

7:00 a.m.-3:21 p.m.

1 stop8h 21m

C$ 318

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Fri 17/4

8:15 a.m.-8:08 p.m.

2 stops11h 53m

San Diego

Tue 21/4

7:00 a.m.-10:50 p.m.

1 stop15h 50m

C$ 365

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Fri 15/5

2:00 p.m.-11:59 p.m.

1 stop9h 59m

San Diego

Mon 18/5

7:00 a.m.-10:51 p.m.

1 stop15h 51m

C$ 387

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Sun 12/4

6:19 p.m.-11:59 p.m.

1 stop5h 40m

San Diego

Tue 21/4

7:00 a.m.-10:50 p.m.

1 stop15h 50m

C$ 406

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Sat 21/3

6:19 p.m.-11:58 p.m.

1 stop5h 39m

San Diego

Thu 2/4

6:15 a.m.-12:16 p.m.

1 stop6h 01m

C$ 427

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Sat 28/3

8:15 a.m.-8:11 p.m.

1 stop11h 56m

San Diego

Sat 4/4

9:07 p.m.-10:50 p.m.

1 stop25h 43m

C$ 427

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Mon 13/4

12:56 p.m.-9:29 p.m.

2 stops8h 33m

San Diego

Wed 22/4

8:03 a.m.-3:21 p.m.

2 stops7h 18m

C$ 434

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Fri 20/3

6:19 p.m.-11:58 p.m.

1 stop5h 39m

San Diego

Wed 25/3

7:00 a.m.-10:50 p.m.

1 stop15h 50m

C$ 461

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Fri 20/3

6:19 p.m.-11:58 p.m.

1 stop5h 39m

San Diego

Tue 24/3

6:02 p.m.-10:50 p.m.

1 stop4h 48m

C$ 470

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Wed 22/4

1:00 p.m.-6:41 p.m.

1 stop5h 41m

C$ 255

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/2

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

Best time to book a flight from Bellingham to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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 San Diego

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

Currently, June is the cheapest month in which you can book a flight from Bellingham to San Diego (average of C$ 86). Flying from Bellingham to San Diego in September is currently the most expensive (average of C$ 409). 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 San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated 1 March 2026.
Check out reviews from past customers who have flown with Allegiant Air from Bellingham to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Allegiant Air
7.2
Good
715 reviews
Check prices

Crew

8.1

Overall

7.2

Food

5.9

Comfort

6.8

Boarding

7.6

Entertainment

5.5

Reviews

1 / 20
4.0
Okay

Michael,Feb 2026

PIE - IND

I appreciate the low cost but the seating is ridiculous. So packed it feels dangerous. Actually it was so bad today, I'm going to look for another airline next time I fly.
Allegiant Air
7.2
Good
715 reviews
Allegiant Air
7.2
Good
715 reviews
Check prices

Crew

8.1

Overall

7.2

Food

5.9

Comfort

6.8

Boarding

7.6

Entertainment

5.5

Reviews

1 / 20
4.0
Okay

Michael,Feb 2026

PIE - IND

I appreciate the low cost but the seating is ridiculous. So packed it feels dangerous. Actually it was so bad today, I'm going to look for another airline next time I fly.

Related info for your journey

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

  • How popular is this Bellingham to San Diego flight route?

    This flight path from Bellingham to San Diego was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Bellingham to San Diego?

    Airlines like Alaska Airlines fly from Bellingham to San Diego in about 4h 15m. The time it takes to get you to your destination can typically vary by up to . Bellingham and San Diego are separated by a distance of 1839 km.

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

    Cheapflights users have booked flights from Bellingham to San Diego round-trip from C$ 100. Allegiant Air is currently priced 78% below the average price you’ll pay for this route.

  • What are the cheapest flights from Bellingham to San Diego?

    Looking at all options, your cheapest flight can be booked for C$ 428. While the most popular route (Bellingham - San Diego) can be booked for C$ 415 on average, our data indicates C$ 450 when flying from Bellingham to San Diego.

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

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

  • How can I find direct flights from Bellingham to San Diego?

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

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

    Yes. Cheapflights offers flight deals from Bellingham to San Diego 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 San Diego?

    Currently, June is the cheapest month in which you can book a flight from Bellingham to San Diego (average of C$ 86). Flying from Bellingham to San Diego in September is currently the most expensive (average of C$ 409). 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

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Bellingham to San Diego

Discover the top airline that operate flights from Bellingham to San Diego. 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 629,999 searches. Data last updated 1 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapestC$ 100AverageC$ 178FlexibilityNo cancel feeOn-time88%
Search Allegiant Air flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Bellingham to San Diego?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Bellingham to San Diego flexibly with Cheapflights today.

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