Cheap flights from San Francisco, CA to Allentown, PA
Flights starting at $107. Choose between Allegiant Air, Frontier Airlines, or Spirit Airlines to find the best price.
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Allentown
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
The most popular airlines for this route are Allegiant Air, Frontier Airlines, Spirit Airlines, Alaska Airlines, and United Airlines. San Francisco and Allentown have 121 direct flights per week.
Check-in for a flight from San Francisco to Allentown
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Weather in Allentown
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 2°C | -5°C |
February | 4°C | -4°C |
March | 8°C | 0°C |
April | 15°C | 4°C |
May | 20°C | 10°C |
June | 25°C | 14°C |
July | 29°C | 18°C |
August | 28°C | 17°C |
September | 24°C | 13°C |
October | 17°C | 8°C |
November | 10°C | 1°C |
December | 5°C | -1°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from San Francisco
- Flights from San Francisco to Las Vegas
- Flights from San Francisco to Paris
- Flights from San Francisco to Barcelona
- Flights from San Francisco to Denver
- Flights from San Francisco to Washington, D.C.
- Flights from San Francisco to Mexico City
- Flights from San Francisco to Chicago
- Flights from San Francisco to Guadalajara
- Flights from San Francisco to London
- Flights from San Francisco to Atlanta
- Flights from San Francisco to Rome
- Flights from San Francisco to Austin
- Flights from San Francisco to Lisbon
- Flights from San Francisco to Madrid
- Flights from San Francisco to New York
- Flights from San Francisco to Dublin
- Flights from San Francisco to Amsterdam
- Flights from San Francisco to New Orleans
- Flights from San Francisco to Berlin
- Flights from San Francisco to Athens
Flights to Allentown
- Flights from Nashville to Allentown
- Flights from Orlando to Allentown
- Flights from Savannah to Allentown
- Flights from Tampa to Allentown
- Flights from Myrtle Beach to Allentown
- Flights from Fort Lauderdale to Allentown
- Flights from Las Vegas to Allentown
- Flights from Chicago to Allentown
- Flights from Sarasota to Allentown
- Flights from Philadelphia to Allentown
- Flights from Los Angeles to Allentown
- Flights from Kansas City to Allentown
- Flights from Austin to Allentown
- Flights from San Juan to Allentown
- Flights from Portland to Allentown
- Flights from Houston to Allentown
- Flights from Raleigh to Allentown
- Flights from Fort Wayne to Allentown
- Flights from New Orleans to Allentown
- Flights from Sacramento to Allentown
Popular routes
- Flights from Santa Ana to Saidpur
- Flights from West Palm Beach to Colombo
- Flights from Sacramento to Chandigarh
- Flights from Little Rock to Amman
- Flights from Midland to Omaha
- Flights from Savannah to Kailua
- Flights from Albuquerque to Sarasota
- Flights from Chicago to Las Vegas
- Flights from Chicago to Denver
- Flights from Washington, D.C. to Denver
- Flights from Harrisburg to Kuwait City
- Flights from Albany to Tirana
- Flights from Kailua to Savannah
Airports near San Francisco
- San Francisco International
- Sacramento International
- Oakland International
- San Jose International
- Stockton Metropolitan
- Monterey Regional
- Charles M. Schulz–Sonoma County
- Merced Regional