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AED 550 Cheap Flights from Seattle (SEA) to Ontario Intl. Airport (ONT)

Flight 1

Cheap Flights from Seattle to Ontario (SEA-ONT)

Prices were available within the past 7 days and start at AED 550 for one-way flights and AED 490 for roundtrip, for the period specified. Prices and availability are subject to change.
Frontier Airlines
Saturday, 22 August, 2026 - Wednesday, 9 September, 2026
SEA
Seattle
ONT
Ontario
AED 490
Roundtrip
Found 6 days ago
Select Frontier Airlines flight, departing Saturday, 22 August, 2026 from Seattle to Ontario, returning Wednesday, 9 September, 2026, priced at AED 490 Found 6 days ago
Frontier Airlines
Monday, 21 September, 2026 - Tuesday, 6 October, 2026
SEA
Seattle
ONT
Ontario
AED 520
Roundtrip
Found 6 days ago
Select Frontier Airlines flight, departing Monday, 21 September, 2026 from Seattle to Ontario, returning Tuesday, 6 October, 2026, priced at AED 520 Found 6 days ago
Frontier Airlines
Saturday, 22 August, 2026 - Thursday, 10 September, 2026
SEA
Seattle
ONT
Ontario
AED 540
Roundtrip
Found 6 days ago
Select Frontier Airlines flight, departing Saturday, 22 August, 2026 from Seattle to Ontario, returning Thursday, 10 September, 2026, priced at AED 540 Found 6 days ago
Frontier Airlines
Monday, 21 September, 2026 - Thursday, 8 October, 2026
SEA
Seattle
ONT
Ontario
AED 570
Roundtrip
Found 6 days ago
Select Frontier Airlines flight, departing Monday, 21 September, 2026 from Seattle to Ontario, returning Thursday, 8 October, 2026, priced at AED 570 Found 6 days ago
Frontier Airlines
Saturday, 22 August, 2026 - Tuesday, 8 September, 2026
SEA
Seattle
ONT
Ontario
AED 600
Roundtrip
Found 6 days ago
Select Frontier Airlines flight, departing Saturday, 22 August, 2026 from Seattle to Ontario, returning Tuesday, 8 September, 2026, priced at AED 600 Found 6 days ago
Frontier Airlines
Saturday, 19 September, 2026 - Thursday, 8 October, 2026
SEA
Seattle
ONT
Ontario
AED 630
Roundtrip
Found 6 days ago
Select Frontier Airlines flight, departing Saturday, 19 September, 2026 from Seattle to Ontario, returning Thursday, 8 October, 2026, priced at AED 630 Found 6 days ago
Delta
Tuesday, 22 September, 2026 - Tuesday, 6 October, 2026
SEA
Seattle
ONT
Ontario
AED 910
Roundtrip
Found 5 days ago
Select Delta flight, departing Tuesday, 22 September, 2026 from Seattle to Ontario, returning Tuesday, 6 October, 2026, priced at AED 910 Found 5 days ago
United
Tuesday, 22 September, 2026 - Tuesday, 6 October, 2026
SEA
Seattle
ONT
Ontario
AED 1,230
Roundtrip
Found 5 days ago
Select United flight, departing Tuesday, 22 September, 2026 from Seattle to Ontario, returning Tuesday, 6 October, 2026, priced at AED 1,230 Found 5 days ago
American Airlines
Tuesday, 22 September, 2026 - Tuesday, 6 October, 2026
SEA
Seattle
ONT
Ontario
AED 1,250
Roundtrip
Found 5 days ago
Select American Airlines flight, departing Tuesday, 22 September, 2026 from Seattle to Ontario, returning Tuesday, 6 October, 2026, priced at AED 1,250 Found 5 days ago
Alaska Airlines
Tuesday, 22 September, 2026 - Tuesday, 6 October, 2026
SEA
Seattle
ONT
Ontario
AED 1,360
Roundtrip
Found 5 days ago
Select Alaska Airlines flight, departing Tuesday, 22 September, 2026 from Seattle to Ontario, returning Tuesday, 6 October, 2026, priced at AED 1,360 Found 5 days ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Los Angeles - Ontario Intl. ONT. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from AED 900
ONT
Los Angeles - Ontario Intl.
CheapestClosest
Average driving time to city center8 min
Flights from AED 900

Travel information

Origin airport
Seattle-Tacoma International Airport
Destination airport
Ontario Intl. Airport
Distance
1,539 km away
Airlines serving
Alaska Airlines, Frontier Airlines, Delta, United, Southwest Airlines, American Airlines, JetBlue Airways
Popular airline
Alaska Airlines
Roundtrip price
AED 490
Average flight time
2 hours 47 mins
*Available to One Key members.