Alaska Airlines Flight 340 Deals & Information (2026/2027)

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Frequently asked questions

What route does flight number AS340 take?
AS340 operates from San Francisco Intl. Airport (SFO) to Newark, NJ Airport (EWR-Liberty Intl.) and is a direct flight. This journey usually takes 5 hours and 45 minutes.
What terminal does AS340 fly out of?
AS340 runs between SFO and Liberty Intl. Airport (EWR), and travelers with a seat on this flight generally board the plane from Terminal 2.
What kind of plane is on flight number AS340?
The Boeing 737-800 is the type of aircraft most often used for flight AS340. This flight almost always departs from SFO and arrives at Newark, NJ Airport (EWR-Liberty Intl.).
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AS340 flight with Travelocity, please visit our Customer Service Portal.