BLI - ONT

$145 Find Cheap Flights from Bellingham to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$145
Typical prices: $348-$612
Multiple Airlines
Fri 11/16Sun 12/2
BLI - ONT • 1 stop
Cheapest one-way
$242
Typical prices: $166-$298
Alaska Airlines
Sat 12/1
BLI - ONT • 1 stop
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Flight Deals

Cheap Flights from Bellingham to Ontario (BLI-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bellingham to Ontario

Mon, Nov 16 - Wed, Dec 2
Multiple Airlines Logo
9:37 am - 9:40 amBLI  Bellingham-ONT Ontario
24h 03m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:00 am - 9:01 amONT  Ontario-BLI Bellingham
25h 01m1 stop Las Vegas Harry Reid Intl
$145Multiple Airlines
Mon, Nov 16 - Wed, Dec 2
Multiple Airlines Logo
9:37 am - 9:40 amBLI  Bellingham-ONT Ontario
24h 03m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
7:06 pm - 10:21 amONT  Ontario-BLI Bellingham
39h 15m2 stops San Francisco Las Vegas Harry Reid Intl
$176Multiple Airlines
Fri, Jan 8 - Sun, Jan 10
Multiple Airlines Logo
8:22 pm - 8:05 amBLI  Bellingham-ONT Ontario
11h 43m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
4:14 pm - 7:32 pmONT  Ontario-BLI Bellingham
27h 18m2 stops Dallas/Fort Worth Las Vegas Harry Reid Intl
$326Multiple Airlines
Fri, Nov 6 - Sun, Nov 8
Multiple Airlines Logo
9:01 pm - 9:05 amBLI  Bellingham-ONT Ontario
12h 04m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:35 pm - 8:47 amONT  Ontario-BLI Bellingham
12h 12m1 stop Las Vegas Harry Reid Intl
$358Multiple Airlines
Fri, Dec 4 - Sun, Dec 6
Multiple Airlines Logo
11:11 am - 6:11 pmBLI  Bellingham-ONT Ontario
7h 00m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
11:00 am - 10:21 amONT  Ontario-BLI Bellingham
23h 21m1 stop Las Vegas Harry Reid Intl
$394Multiple Airlines
Wed, Jan 20 - Wed, Jan 27
Alaska Airlines Logo
5:02 am - 10:38 amBLI  Bellingham-ONT Ontario
5h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
11:36 am - 5:21 pmONT  Ontario-BLI Bellingham
5h 45m1 stop Seattle/Tacoma Intl
$401Alaska Airlines
Mon, Mar 15 - Wed, Mar 24
Multiple Airlines Logo
11:43 am - 7:07 amBLI  Bellingham-ONT Ontario
19h 24m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
6:27 pm - 8:58 amONT  Ontario-BLI Bellingham
14h 31m1 stop Las Vegas Harry Reid Intl
$413Multiple Airlines
Mon, Mar 15 - Wed, Mar 24
Multiple Airlines Logo
11:43 am - 7:07 amBLI  Bellingham-ONT Ontario
19h 24m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
6:27 pm - 8:58 amONT  Ontario-BLI Bellingham
14h 31m1 stop Las Vegas Harry Reid Intl
$414Multiple Airlines
Thu, Nov 26 - Sat, Dec 5
Alaska Airlines Logo
12:18 pm - 5:17 pmBLI  Bellingham-ONT Ontario
4h 59m1 stop Portland
Alaska Airlines Logo
6:17 pm - 10:58 pmONT  Ontario-BLI Bellingham
4h 41m1 stop Portland
$426Alaska Airlines
Wed, Jan 20 - Wed, Jan 27
Alaska Airlines Logo
12:32 pm - 8:02 pmBLI  Bellingham-ONT Ontario
7h 30m1 stop Portland
Alaska Airlines Logo
11:36 am - 10:36 pmONT  Ontario-BLI Bellingham
11h 00m2 stops Seattle/Tacoma Intl Portland
$431Alaska Airlines
Booking Insights

Price, demand and travel trends for Bellingham to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Bellingham to Ontario?

Alaska Airlines ($401) offered the cheapest round-trip ticket from Bellingham to Ontario in the last 5 days.

Find deals

Key details for Bellingham to Ontario flights

Cheapest flight

$145
Round-trip flight from Bellingham to Ontario

When to book flights from Bellingham to Ontario

Are your dates flexible? Find out the best times to travel from Bellingham to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Bellingham to Ontario flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Bellingham to Ontario?

    Only Economy Class is available on flights from Bellingham to Ontario.

  • Do I need a passport to fly from Bellingham to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How are flight prices from Bellingham to Ontario looking right now?

    One-way fares from Bellingham to Ontario are currently higher than usual. Average one-way flight prices are about $336, which is 73% above the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

  • Which airports can I use when flying from Bellingham to Ontario?

    Flights from Bellingham to Ontario usually depart from Bellingham (BLI) and arrive at Ontario (ONT).

  • Which airports do connecting flights from Bellingham to Ontario pass through?

    Most connecting flights from Bellingham to Ontario pass through Seattle/Tacoma Intl (SEA), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Bellingham to Ontario?

    Yes. Flexible dates can save you up to 70% on flights from Bellingham to Ontario. Monday is the cheapest departure day at $347 round-trip on average, while Wednesday is the most expensive at $1,148, a difference of $801.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Bellingham to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.

More options for your flight from Bellingham to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario