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Cheap flights from Illinois to San Francisco from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Francisco departing on 4/9. 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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Find the cheapest flights from Illinois to San Francisco

Cheap round-trip flights

These are some of the best round-trip flight deals from Illinois to San Francisco that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Illinois to San Francisco.

Cheap last minute flights

Planning a quick getaway from Illinois to San Francisco? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Francisco, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Illinois to San Francisco

Find recent round-trip train or bus tickets from Illinois to San Francisco.

All round-trip flight deals to San Francisco

The cheapest plane tickets to San Francisco found on KAYAK recently.
7:09 pm - 12:09 amSTL-SFO
7h 00m1 stop
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
$110Frontier
Find Deal
Wed, Jan 29 - Thu, Jan 30
7:09 pm - 12:09 amSTL-SFO
7h 00m1 stop
3:18 pm - 7:31 pmSFO-STL
26h 13m1 stop
$117Frontier
Find Deal
Sat, Feb 1 - Wed, Feb 5
10:45 pm - 10:09 pmORD-SFO
25h 24m2 stops
2:53 pm - 1:25 pmSFO-ORD
20h 32m1 stop
Wed, Feb 12 - Wed, Feb 26
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
6:05 am - 2:11 pmSFO-ORD
6h 06m1 stop
Thu, Feb 6 - Mon, Feb 10
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
10:00 am - 4:27 pmSFO-ORD
4h 27mnonstop
$193Alaska Airlines
Find Deal
Thu, Jan 30 - Thu, Feb 6
12:39 pm - 3:28 pmORD-SFO
4h 49mnonstop
5:20 am - 11:36 amSFO-ORD
4h 16mnonstop
$196American Airlines
Find Deal
Thu, Jan 30 - Thu, Feb 6
4:45 pm - 7:40 pmMDW-SFO
4h 55mnonstop
6:15 am - 12:25 pmSFO-MDW
4h 10mnonstop
$197Southwest
Find Deal
Fri, Feb 7 - Mon, Feb 10
12:39 pm - 3:28 pmORD-SFO
4h 49mnonstop
5:00 am - 11:05 amSFO-ORD
4h 05mnonstop
$206American Airlines
Find Deal
Tue, Feb 11 - Thu, Feb 13
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
7:00 am - 5:59 pmSFO-ORD
8h 59m1 stop
$207Alaska Airlines
Find Deal
Thu, Feb 6 - Sat, Feb 8
6:20 am - 2:50 pmMDW-SFO
10h 30m1 stop
6:10 am - 12:20 pmSFO-MDW
4h 10mnonstop
$207Southwest
Find Deal
Thu, Jan 30 - Sun, Feb 2
6:51 pm - 12:44 amSTL-SFO
7h 53m1 stop
$55Frontier
Find Deal
Wed, Apr 9
8:15 am - 11:59 pmMDW-SFO
17h 44m1 stop
$58Frontier
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Tue, Feb 4
6:58 pm - 9:57 pmORD-SFO
4h 59mnonstop
$97Alaska Airlines
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Wed, Apr 23
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
$99Alaska Airlines
Find Deal
Sun, Feb 9
4:45 pm - 7:40 pmMDW-SFO
4h 55mnonstop
$99Southwest
Find Deal
Sun, Feb 2
9:30 am - 12:25 pmMDW-SFO
4h 55mnonstop
$109Southwest
Find Deal
Sun, Feb 16
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$114United Airlines
Find Deal
Sat, Feb 8
3:22 pm - 11:04 pmORD-SFO
9h 42m1 stop
$119American Airlines
Find Deal
Sat, Feb 1
3:25 pm - 11:00 pmSTL-SFO
9h 35m1 stop
$124United Airlines
Find Deal
Thu, Mar 13
8:31 am - 11:30 amORD-SFO
4h 59mnonstop
$139American Airlines
Find Deal
Fri, Feb 14
6:36 pm - 7:14 amORD-SFO
14h 38m1 stop
3:18 pm - 5:25 pmSFO-ORD
24h 07m1 stop
$269Frontier
Find Deal
Sun, Jan 12 - Wed, Jan 15
6:36 pm - 7:14 amORD-SFO
14h 38m1 stop
9:10 pm - 12:32 amSFO-ORD
25h 22m1 stop
$281Frontier
Find Deal
Sun, Jan 12 - Thu, Jan 16
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
1:00 pm - 6:59 pmSFO-STL
3h 59mnonstop
$349United Airlines
Find Deal
Wed, Jan 15 - Sun, Jan 19
6:15 am - 12:05 pmSTL-SFO
7h 50m1 stop
1:00 pm - 6:59 pmSFO-STL
3h 59mnonstop
$359United Airlines
Find Deal
Wed, Jan 15 - Sun, Jan 19
7:15 am - 1:49 pmSTL-SFO
8h 34m1 stop
12:40 am - 10:54 amSFO-STL
8h 14m1 stop
$369Delta
Find Deal
Tue, Jan 14 - Mon, Jan 20
7:00 am - 1:35 pmSTL-SFO
8h 35m1 stop
9:15 am - 7:30 pmSFO-STL
8h 15m2 stops
$374American Airlines
Find Deal
Sat, Jan 11 - Wed, Jan 15
1:00 pm - 3:50 pmORD-SFO
4h 50mnonstop
5:15 am - 11:21 amSFO-ORD
4h 06mnonstop
$403American Airlines
Find Deal
Sat, Jan 11 - Wed, Feb 19
3:10 pm - 5:40 pmSTL-SFO
4h 30mnonstop
3:15 pm - 11:05 pmSFO-STL
5h 50m1 stop
$438Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21
5:50 pm - 10:15 pmSTL-SFO
6h 25m1 stop
6:05 am - 5:20 pmSFO-STL
9h 15m2 stops
$444Southwest
Find Deal
Wed, Jan 15 - Sun, Jan 19
5:47 am - 2:21 pmMLI-SFO
10h 34m1 stop
7:10 am - 4:25 pmSFO-MLI
7h 15m1 stop
$489Delta
Find Deal
Sat, Jan 11 - Tue, Jan 14
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
10:00 am - 4:27 pmSFO-ORD
4h 27mnonstop
$187Alaska Airlines
Find Deal
Thu, Feb 6 - Mon, Feb 10
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
10:00 am - 4:27 pmSFO-ORD
4h 27mnonstop
$193Alaska Airlines
Find Deal
Thu, Jan 30 - Thu, Feb 6
12:39 pm - 3:28 pmORD-SFO
4h 49mnonstop
5:20 am - 11:36 amSFO-ORD
4h 16mnonstop
$196American Airlines
Find Deal
Thu, Jan 30 - Thu, Feb 6
4:45 pm - 7:40 pmMDW-SFO
4h 55mnonstop
6:15 am - 12:25 pmSFO-MDW
4h 10mnonstop
$197Southwest
Find Deal
Fri, Feb 7 - Mon, Feb 10
10:50 am - 1:48 pmORD-SFO
4h 58mnonstop
11:05 pm - 5:30 amSFO-ORD
4h 25mnonstop
$197United Airlines
Find Deal
Thu, Feb 6 - Sun, Feb 9
12:39 pm - 3:28 pmORD-SFO
4h 49mnonstop
5:00 am - 11:05 amSFO-ORD
4h 05mnonstop
$206American Airlines
Find Deal
Tue, Feb 11 - Thu, Feb 13
4:45 pm - 7:40 pmMDW-SFO
4h 55mnonstop
10:20 am - 4:30 pmSFO-MDW
4h 10mnonstop
$207Southwest
Find Deal
Thu, Feb 6 - Thu, Feb 13
6:55 pm - 9:54 pmORD-SFO
4h 59mnonstop
10:46 am - 4:58 pmSFO-ORD
4h 12mnonstop
$207Alaska Airlines
Find Deal
Thu, Feb 6 - Thu, Feb 13
8:30 am - 11:24 amORD-SFO
4h 54mnonstop
5:20 am - 11:36 amSFO-ORD
4h 16mnonstop
$208American Airlines
Find Deal
Thu, Feb 6 - Mon, Feb 10
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
12:10 pm - 6:09 pmSFO-STL
3h 59mnonstop
$227United Airlines
Find Deal
Thu, Feb 6 - Mon, Feb 10

Frontier flights from Illinois to San Francisco

Our best Frontier deals on Illinois to San Francisco flight tickets
Frontier
Jan 29
STL7:09 pmLambert-St Louis
7h 00m
1 stop
SFO12:09 amSan Francisco
Jan 30
SFO9:10 pmSan Francisco
10h 06m
1 stop
STL9:16 amLambert-St Louis
Frontier
Feb 1
STL7:09 pmLambert-St Louis
7h 00m
1 stop
SFO12:09 amSan Francisco
Feb 5
SFO3:18 pmSan Francisco
26h 13m
1 stop
STL7:31 pmLambert-St Louis
Frontier
Feb 24
STL11:08 pmLambert-St Louis
12h 34m
1 stop
SFO9:42 amSan Francisco
Mar 3
SFO11:02 amSan Francisco
9h 06m
1 stop
STL10:08 pmLambert-St Louis

American Airlines flights from Illinois to San Francisco

Our best American Airlines deals on Illinois to San Francisco flight tickets
American Airlines
Jan 30
ORD12:39 pmChicago O'Hare Intl
4h 49m
SFO3:28 pmSan Francisco
Feb 6
SFO5:20 amSan Francisco
4h 16m
ORD11:36 amChicago O'Hare Intl
American Airlines
Feb 11
ORD12:39 pmChicago O'Hare Intl
4h 49m
SFO3:28 pmSan Francisco
Feb 13
SFO5:00 amSan Francisco
4h 05m
ORD11:05 amChicago O'Hare Intl
American Airlines
Feb 6
ORD8:30 amChicago O'Hare Intl
4h 54m
SFO11:24 amSan Francisco
Feb 10
SFO5:20 amSan Francisco
4h 16m
ORD11:36 amChicago O'Hare Intl

See travel insights to San Francisco from

How to get the cheapest flight ticket from Illinois 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 April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $279.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Illinois to San Francisco is on a Wednesday when prices can be found for as low as $298. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $384.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Illinois to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $314. Flights at noon are often more expensive with an average ticket price of $356.

What is the cheapest Illinois to San Francisco flight route?

Fly from Chicago Midway to San Francisco for the best Illinois - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

The ideal time to book your flight to San Francisco is 48 days in advance when prices tend to average $336. In the past 72 hours, momondo users found flights from Illinois to San Francisco for as low as $257.

What cabin class options are available on Illinois to San Francisco flights?

There are 4 cabin classes available to choose from on Illinois to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Illinois to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to San Francisco

Best Price Found

$55

Fastest flight time

4h 10m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from Illinois in the past 72 hours is $55. The best round-trip flight deal from Illinois to San Francisco found on momondo in the last 72 hours is $110.
The fastest flight from Illinois to San Francisco takes 4h 10m
Direct flights go from Illinois to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)

  • When did momondo last update prices for flights from Illinois to San Francisco Airport?

    Prices for flights from Illinois to San Francisco Airport refresh daily.

  • How many operators does momondo search for flights from Illinois to San Francisco Airport?

  • How old do you have to be to fly from Illinois 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 Illinois to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to San Francisco?


Best airlines flying from Illinois to San Francisco

Compare and see reviews for airlines that fly from Illinois to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $90Free CancellationRating
6.0
3,428 reviews
Search Frontier flights
United AirlinesPriceFrom $141Free CancellationRating
7.4
8,942 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $149Free CancellationRating
8.0
9,643 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $193Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $234Free CancellationRating
8.0
8,501 reviews
Search Delta flights
SouthwestPriceFrom $264Free CancellationRating
8.1
4,650 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to San Francisco?

It is quick and easy to find Illinois to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

Can I find flights from Illinois to San Francisco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to San Francisco flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to San Francisco?

Once you have performed a search for Illinois to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to San Francisco right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Francisco from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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