ASE - SFO

$239 Find Cheap Flights from Aspen to San Francisco - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Aspen to San Francisco departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$449
Typical prices: $263-$408
United Airlines
Thu 10/1Mon 10/5
ASE - SFO • Non-stop
Cheapest non-stop
$485
Typical prices: $319-$545
United Airlines
Fri 7/31Mon 8/3
ASE - SFO • Non-stop
Top airlines
Cheapest • from $449 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 39m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $311 (round-trip)
Shortest trip • 5h 19m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 30% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Aspen to San Francisco (ASE-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Aspen to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Aspen to San Francisco

Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
9:40 am - 11:25 am
ASE
-
SFO
2h 45mnonstop
United Airlines Logo
4:35 pm - 8:07 pm
SFO
-
ASE
2h 32mnonstop
$449United Airlines
Fri, Jul 31 - Mon, Aug 3
United Airlines Logo
7:15 pm - 8:54 pm
ASE
-
SFO
2h 39mnonstop
United Airlines Logo
5:00 am - 10:51 am
SFO
-
ASE
4h 51m
1 stop
$459United Airlines
Fri, Jul 24 - Fri, Jul 31
United Airlines Logo
7:15 pm - 8:54 pm
ASE
-
SFO
2h 39mnonstop
United Airlines Logo
12:15 pm - 7:31 pm
SFO
-
ASE
6h 16m
1 stop
$464United Airlines
Fri, Jul 31 - Mon, Aug 3
United Airlines Logo
6:12 pm - 10:56 pm
ASE
-
SFO
5h 44m
1 stop
United Airlines Logo
5:00 am - 10:51 am
SFO
-
ASE
4h 51m
1 stop
$469United Airlines
Fri, Jul 24 - Fri, Jul 31
American Airlines Logo
6:01 pm - 11:59 pm
ASE
-
SFO
6h 58m
1 stop
American Airlines Logo
11:40 am - 5:23 pm
SFO
-
ASE
4h 43m
1 stop
$474American Airlines
Thu, Jul 23 - Mon, Jul 27
American Airlines Logo
4:30 pm - 10:14 pm
ASE
-
SFO
6h 44m
1 stop
American Airlines Logo
9:08 am - 3:59 pm
SFO
-
ASE
5h 51m
1 stop
$479American Airlines
Fri, Jul 31 - Mon, Aug 3
United Airlines Logo
9:40 am - 11:19 am
ASE
-
SFO
2h 39mnonstop
United Airlines Logo
4:25 pm - 7:55 pm
SFO
-
ASE
2h 30mnonstop
$485United Airlines
Fri, Oct 9 - Sun, Oct 11
Delta Logo
12:02 pm - 3:54 pm
ASE
-
SFO
4h 52m
1 stop
Delta Logo
12:00 pm - 8:14 pm
SFO
-
ASE
7h 14m
1 stop
$504Delta
Fri, Jul 31 - Mon, Aug 3
United Airlines Logo
9:40 am - 11:19 am
ASE
-
SFO
2h 39mnonstop
United Airlines Logo
4:25 pm - 7:55 pm
SFO
-
ASE
2h 30mnonstop
$505United Airlines
Thu, Jul 23 - Mon, Jul 27
United Airlines Logo
5:10 pm - 10:56 pm
ASE
-
SFO
6h 46m
1 stop
United Airlines Logo
4:25 pm - 7:55 pm
SFO
-
ASE
2h 30mnonstop
$508United Airlines
Booking Insights

KAYAK's insights & trends for Aspen to San Francisco flights

Get data-powered insights and trends into flights from Aspen to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Aspen to San Francisco?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Aspen to San Francisco departing in October.

What’s the cheapest day of the week to fly from Aspen to San Francisco?

The average price of all round-trip flights from Aspen to San Francisco clicked on KAYAK for each day over the last 12 months.

For Aspen to San Francisco, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from San Francisco back to Aspen, the best deals are generally found on Saturday, with Sunday being the most expensive.

What is the cheapest month to fly from Aspen to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Aspen to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Aspen to San Francisco is September, where tickets cost $268 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $508 and $474 respectively.

Can I save money by flying with a layover from Aspen to San Francisco?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $492 on average.

Good to know

Low seasonMay
Cheapest flight$239
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Aspen to San Francisco

When to book flights from Aspen to San Francisco

Are your dates flexible? Find out the best times to travel from Aspen to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Aspen to San Francisco

  • What is the cheapest flight from Aspen to San Francisco?

    In the last 5 days, the lowest price for a flight from Aspen to San Francisco was $239 for a one-way ticket and $449 for a round-trip.

  • Do I need a passport to fly between Aspen and San Francisco?

    A passport is not required to fly from Aspen to San Francisco.

  • Which aircraft models fly most regularly from Aspen to San Francisco?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Aspen to San Francisco flight route.

  • Which airline alliances offer flights from Aspen to San Francisco?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Aspen and San Francisco, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Aspen to San Francisco?

    There are nonstop flights from Aspen to San Francisco on a daily basis.

  • Which is the best airline for flights from Aspen to San Francisco, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Aspen to San Francisco are Delta and United Airlines. With an average price for the route of $298 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $376 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Aspen to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Aspen to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Aspen to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Aspen is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Aspen to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Aspen with another airline. Booking your flights between Aspen and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Aspen to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Aspen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Aspen to San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $343 or less one-way and $578 or less round-trip.

Prefer to fly direct from Aspen to San Francisco?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Aspen Pitkin County to San Francisco.
Find which airlines fly direct from Aspen Pitkin County Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Aspen Pitkin County to San Francisco

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

San Francisco to Aspen Pitkin County

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top airlines flying from Aspen to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Aspen to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Aspen to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8451 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.8Entertainment
7.2Food
Airline reviews

We sat on the runway for over an hour before departure. That was unwelcome.

6.0 GoodAnonymous, Jun 2026
SEA - SFO
Read more Delta reviews

We sat on the runway for over an hour before departure. That was unwelcome.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Excellent flight. On time. Great staff. Clean and crisp cabin.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Flight was late - I was downgraded from first class to coach

United requires seat selection in order for those booking together to stay together.

Everything you need to know for your flight from Aspen to San Francisco

Information on your arrival and departure airports