Flying a bike from Denver to San Francisco

No airline checks a bike for free on this route. Cheapest: United, ~$45–50 per bike each way.

Nonstop: United from DEN, Southwest from DEN and Frontier from DEN. Prices are per bike, each way, within the US. Checked October 1, 2026.

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Airline	Bike, each way	Airports	Good to know
United	~$45–50	DEN → SFO	Nonstop
Southwest	$45	DEN → SFO	Nonstop
Delta	$45	DEN → SFO	—
American	$45–50	DEN → SFO	—
Alaska	$45	DEN → SFO	No overweight fee to 70 lb
Frontier	$100	DEN → SFO	Nonstop

Free means the bike counts as one of your checked bags. Basic and Light fares often don't include a free bag. Open an airline for its rules.

Quick answers

Which airlines fly a bike for free from Denver to San Francisco?

None of the airlines in this guide fly a bike for free on this route.

How much does it cost to fly a bike from Denver to San Francisco?

Paid options range from ~$45–50 (United) to $100 (Frontier) per bike, each way.

Is there a nonstop flight from Denver to San Francisco?

Nonstop: United from DEN, Southwest from DEN and Frontier from DEN.