Cheap flights from Portland, Maine to San Francisco from $126
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to San Francisco departing on 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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American Airlines flights from Portland, Maine to San Francisco
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How to get the cheapest flight ticket from Portland, Maine to San Francisco
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Francisco?
If you aren’t able to travel to San Francisco during the month of February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $376.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart from Portland, Maine to San Francisco is on a Friday when prices can be found for as low as $431. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $740.
What is the cheapest time of day to depart on your flight to San Francisco?
Our data shows that the cheapest Portland, Maine to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $422. Flights in the morning are often more expensive with an average ticket price of $509.
How far in advance should I book a flight to San Francisco?
You are more likely to see cheaper flights to San Francisco from Portland, Maine when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $438 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Portland, Maine for as low as $336 on momondo.
Can stopping save me money on Portland, Maine to San Francisco flights?
You could potentially save up to 13% on your flight if you consider stops on a Portland, Maine to San Francisco flight.
How have Portland, Maine to San Francisco flight prices changed over time?
As of June 2025, prices for Portland, Maine to San Francisco flights are approximately 21% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Portland to San Francisco?
American Airlines, United Airlines, and Delta are the most popular carriers operating from Portland to San Francisco
What airlines fly to San Francisco?
JetBlue, United Airlines and Delta are the top three most popular airlines that fly to San Francisco from Portland, Maine according to our data. JetBlue is the first choice among our users, with 39% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland, Maine to San Francisco
Cheap Portland, Maine to San Francisco (PWM to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to San Francisco
How far is Portland to San Francisco by plane?
Portland and San Francisco are 2713.8 mi apart from one another. In terms of flight time, this usually takes a little over 8h 15m.
When did momondo last update prices for flights from Portland Airport to San Francisco Airport?
Prices for flights from Portland Airport to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to San Francisco Airport?
There are 4 operators available for flights from Portland Airport to San Francisco Airport as of June 2025.
How old do you have to be to fly from Portland Airport to San Francisco Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland, Maine to San Francisco?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland, Maine to San Francisco is American Airlines (39% of total bookings). The next most popular airlines are United Airlines (37%), Delta (22%), and JetBlue (2%).
Best airlines flying from Portland, Maine to San Francisco
Compare and see reviews for airlines that fly from Portland, Maine to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $216 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $276 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $320 | Free Cancellation | Rating 7.3 2,925 reviews |
Traveling to a place near San Francisco?
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Why should I use momondo to find a flight deal from Portland to San Francisco?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to San Francisco for you.
Can I find flights from Portland to San Francisco with flexible booking policies on momondo?
Yes. All flights to San Francisco from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Portland to San Francisco?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from Portland.
I’m not ready to book a flight from Portland to San Francisco right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Portland to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.