Popular airlines from Boulder to San Diego
American AirlinesAmerican Airlines
Alaska AirlinesAlaska Airlines
Frontier AirlinesFrontier Airlines
Southwest AirlinesSouthwest Airlines
UnitedUnited
DeltaDelta
JetBlue AirwaysJetBlue Airways
- Plan, book, fly with confidence
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Find the cheapest month to fly from Denver (DEN) to San Diego (SAN)
September is typically the cheapest month to fly
From ฿1,554 - ฿3,889 per traveller.
Graph displaying average flight prices per month
Nearby Cities
Top Routes to San Diego
Expedia's Latest Trends
Hotels
- Aree Tara Resort
- Gord Chiangmai
- The Heaven at Star Hill Condo
- Hilton Pattaya
- ibis Styles Phuket City Hotel
- Lawinta Hotel Pattaya
- Prachuap Beach Hotel
- Seeka Boutique Resort
- Koh Yao Yai Village
- Similan Mansion
- InterContinental Bangkok by IHG
- Marsi Hotel
- Hillside Resort Pattaya
- Zenmaya Oceanfront Phuket, Trademark Collection by Wyndham
- Poseidon Boutique Hotel
- Himmapana Luxury Villas
Flights
*Available to Expedia members.