Outbound | Return | Airlines | Shop | Baggage | Price | ||
---|---|---|---|---|---|---|---|
Seattle-Tacoma Ontario | Outbound 10/23/25 1 Stopover (DEN) F93406, F91261 20h 33min | Return 10/26/25 direct F93164 02h 56min | | ![]() | $206 | ||
Best option Seattle-Tacoma Ontario | Outbound 10/23/25 direct AS1003 02h 38min | Return 10/26/25 direct AS0607 02h 50min | | ![]() | ? | $334 | |
Seattle-Tacoma Ontario | Outbound 10/23/25 1 Stopover (DEN) F93406, F91261 20h 33min | Return 10/26/25 direct F93164 02h 56min | | ![]() | $207 | ||
Seattle-Tacoma Ontario | Outbound 10/23/25 1 Stopover (LAS) F94830, F92231 05h 29min | Return 10/26/25 direct F93164 02h 56min | | ![]() | $217 | ||
Seattle-Tacoma Ontario | Outbound 10/23/25 direct AS1254 02h 46min | Return 10/26/25 direct AS0607 02h 50min | | ![]() | ? | $917 |
Stops
- Direct flight
Airline
- Frontier Airlines
- Alaska Airlines
Tips and tricks to help you find cheap flights from Seattle Tacoma to Ontario
Favorite airline: Frontier Airlines
The majority of passengers on the route Seattle-Tacoma – Ontario prefer to fly with Frontier Airlines.

Frontier Airlines
58 %

Alaska Airlines
26 %

Delta
12 %
Cheapest weekday: Tuesday
The cheapest flights on this route are operated on Tuesday.
Stopover flights are the cheapest connection
Direct flights on this route are $80.00 more expensive on average than flights with a stopover.
non stop flight
1 stop
02h 34min
19h 50min
$191
$111
Favourite connection: via Las Vegas
Flights with a stopover in Las Vegas are the most popular connection for this route.
Route
bookings
1 stopover Las Vegas - McCarran International Airport, NV
23h 41min, from $162
47 %
1 stopover Denver International Airport, CO
19h 50min, from $111
45 %
1 stopover Salt Lake City International Airport, UT
06h 52min, from $355
6 %
Important flight information
Flight information: Seattle-Tacoma - Ontario
Roundtrip from | $205.95 |
---|---|
Flight duration | min. 02:30 / max. 03:20 |
Return flight duration | min. 02:45/ max. 08:05 |
Distance | 1542 km |
Flights per week | 23 |
Departure airport | Airport Seattle-Tacoma International Airport, WA (SEA) |
Arrival airport | Airport Ontario-CA (ONT) |
Destination country | Flights to United States |
Alternative routes to United States
- Flight Seattle-Tacoma - Los Angeles from $228
- Flight Seattle-Tacoma - New York from $237
- Flight Seattle-Tacoma - San Diego from $79
- Flight Seattle-Tacoma - Atlanta from $190
- Flight Seattle-Tacoma - New York from $237
- Flight Seattle-Tacoma - Newark from $240
Alternative flights to Ontario
- Flight San Francisco - Ontario from $75
- Flight Dallas - Ontario from $139
- Flight Baltimore - Ontario from $399
- Flight Sacramento - Ontario from $285
Flight destinations with a similar price
- Flight Ontario - Frankfurt from $468
- Flight Ontario - Nuremberg from $881
Flight destinations with a similar price
- Flight Seattle-Tacoma - Atlanta from $190