Flight Route
Ontario to Seattle
ONT → SEA
Airlines
2 operating direct
Direct Flights
Available
Origin
Ontario International Airport
Destination
Seattle–Tacoma International Airport
Connection Options
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+2 moreTransit countries:
Direct
Connection
Route Options
Direct
Direct
1 Stop
via PDX
via SMF
via SJC
via OAK
via SFO
via LAS
via SLC
via PHX
via DEN
via DFW
via IAH
via MDW
2 Stops
via SMF + PDX
via SJC + PDX
via OAK + PDX
via OAK + EUG
via SFO + PDX
via SFO + MFR
via SFO + EUG
Airlines Flying Direct
Alaska
ASALASKA
Direct
American
AAUnited States
DirectCodeshare
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Price Trends
Average flight prices from ONT to SEA by month
Flight Delayed or Cancelled?
You may be entitled to up to €600 in compensation for flight disruptions on your ONT to SEA route.
- Delayed by 3+ hours
- Cancelled flight
- Denied boarding
- Claims valid up to 3 years back
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