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Find the Cheapest Flights to San Francisco

Unlock the cheapest flights and the best airfares to San Francisco. Make your dream trip both memorable and affordable!

Airline Frontier Airlines icon
Thu, Apr 23WAS-SFO
Frontier Airlines
oneway$107
Airline Frontier Airlines icon
Tue, Apr 28WAS-SFO
Frontier Airlines
$186

Washington Dulles International Airport to San Francisco: Flight information

Cheapest flight found$107
Cheapest month to flyApril
Most popular airlineFrontier Airlines
Average flight duration14h 24m

Cheapest flight found

Apr 2026

$107

May 2026

$115

Jun 2026

$131

Jul 2026

$134

Airlines price comparison

Airlines
Cheapest Airline
Frontier Airlines
Cheapest Month
Apr
Cheapest Day of The Week
Thu
Airline: Frontier Airlines
$107

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