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Cheap flights from Illinois to San Francisco from $149

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 12/16. 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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0 bags

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Cheap round-trip flights

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Hawaiian Airlines Logo
2:59 pm - 11:25 pmORD-MRY
10h 26m1 stop
Hawaiian Airlines Logo
2:25 pm - 11:59 pmMRY-ORD
7h 34m1 stop
$290Hawaiian Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Alaska Airlines Logo
7:45 am - 1:35 pmORD-MRY
7h 50m1 stop
Alaska Airlines Logo
6:00 am - 1:59 pmMRY-ORD
5h 59m1 stop
$298Alaska Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
10:47 am - 9:18 pmMLI-MRY
12h 31m2 stops
United Airlines Logo
6:03 pm - 10:16 amMRY-MLI
14h 13m2 stops
$299United Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 18
Multiple Airlines Logo
6:00 am - 3:34 pmORD-MRY
11h 34m2 stops
Multiple Airlines Logo
9:49 pm - 5:32 amMRY-ORD
29h 43m1 stop
$304Multiple Airlines
Find Deal
Mon, Nov 17 - Fri, Nov 21
Alaska Airlines Logo
6:06 pm - 2:37 pmORD-MRY
22h 31m2 stops
Alaska Airlines Logo
3:14 pm - 2:38 pmMRY-ORD
21h 24m2 stops
$313Alaska Airlines
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Fri, Jan 30 - Mon, Feb 2
Alaska Airlines Logo
7:00 am - 1:35 pmSTL-MRY
8h 35m1 stop
Alaska Airlines Logo
2:25 pm - 11:56 pmMRY-STL
7h 31m1 stop
$318Alaska Airlines
Find Deal
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
7:00 am - 11:49 amSTL-MRY
6h 49m1 stop
American Airlines Logo
4:24 pm - 11:51 pmMRY-STL
5h 27m1 stop
$343American Airlines
Find Deal
Wed, Dec 24 - Sun, Jan 4
United Airlines Logo
9:00 am - 5:31 pmSTL-MRY
10h 31m2 stops
United Airlines Logo
7:00 am - 4:27 pmMRY-STL
7h 27m1 stop
$348United Airlines
Find Deal
Sat, Dec 6 - Thu, Dec 11
American Airlines Logo
5:16 am - 11:49 amSTL-MRY
8h 33m1 stop
American Airlines Logo
12:39 pm - 10:56 pmMRY-STL
8h 17m1 stop
$367American Airlines
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Sun, Dec 21 - Sat, Dec 27
Multiple Airlines Logo
6:05 am - 8:55 pmORD-MRY
16h 50m3 stops
Multiple Airlines Logo
9:45 pm - 9:23 pmMRY-ORD
21h 38m2 stops
$389Multiple Airlines
Find Deal
Fri, Jan 30 - Mon, Feb 2

American Airlines flights from Illinois to Monterey

Our best American Airlines deals on Illinois to Monterey flight tickets
American Airlines
Dec 24
STL7:00 amLambert-St Louis
6h 49m
1 stop
MRY11:49 amMonterey Regional
Jan 4
MRY4:24 pmMonterey Regional
5h 27m
1 stop
STL11:51 pmLambert-St Louis
$343
Find similar
American Airlines
Dec 21
STL5:16 amLambert-St Louis
8h 33m
1 stop
MRY11:49 amMonterey Regional
Dec 27
MRY12:39 pmMonterey Regional
8h 17m
1 stop
STL10:56 pmLambert-St Louis
$367
Find similar
American Airlines
Dec 21
STL5:16 amLambert-St Louis
8h 33m
1 stop
MRY11:49 amMonterey Regional
Dec 27
MRY7:18 pmMonterey Regional
11h 17m
2 stops
STL8:35 amLambert-St Louis
$372
Find similar

Alaska Airlines flights from Illinois to Monterey

Our best Alaska Airlines deals on Illinois to Monterey flight tickets
Alaska Airlines
Mar 10
ORD7:45 amChicago O'Hare Intl
7h 50m
1 stop
MRY1:35 pmMonterey Regional
Mar 11
MRY6:00 amMonterey Regional
5h 59m
1 stop
ORD1:59 pmChicago O'Hare Intl
$298
Find similar
Alaska Airlines
Jan 30
ORD6:06 pmChicago O'Hare Intl
22h 31m
2 stops
MRY2:37 pmMonterey Regional
Feb 2
MRY3:14 pmMonterey Regional
21h 24m
2 stops
ORD2:38 pmChicago O'Hare Intl
$313
Find similar
Alaska Airlines
Feb 21
STL7:00 amLambert-St Louis
8h 35m
1 stop
MRY1:35 pmMonterey Regional
Feb 25
MRY2:25 pmMonterey Regional
7h 31m
1 stop
STL11:56 pmLambert-St Louis
$318
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Monterey that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 4, 2025.
Use the filters below to find and compare flights from Illinois to Monterey that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMonterey

ORD - MRY

ORDMRY

Chicago O'Hare Intl

Tue 3/10

2:59 pm-11:25 pm

1 stop10h 26m

Monterey Regional

Wed 3/11

2:25 pm-11:59 pm

1 stop7h 34m

$290

ChicagoMonterey

ORD - MRY

ORDMRY

Chicago O'Hare Intl

Tue 3/10

7:45 am-1:35 pm

1 stop7h 50m

Monterey Regional

Wed 3/11

6:00 am-1:59 pm

1 stop5h 59m

$298

MolineMonterey

MLI - MRY

MLIMRY

Moline Quad-City

Wed 2/11

10:47 am-9:18 pm

2 stops12h 31m

Monterey Regional

Wed 2/18

6:03 pm-10:16 am

2 stops14h 13m

$299

ChicagoMonterey

ORD - MRY

ORDMRY

Chicago O'Hare Intl

Mon 11/17

6:00 am-3:34 pm

2 stops11h 34m

Monterey Regional

Fri 11/21

9:49 pm-5:32 am

1 stop29h 43m

$304

ChicagoMonterey

ORD - MRY

ORDMRY

Chicago O'Hare Intl

Fri 1/30

6:06 pm-2:37 pm

2 stops22h 31m

Monterey Regional

Mon 2/2

3:14 pm-2:38 pm

2 stops21h 24m

$313

St. LouisMonterey

STL - MRY

STLMRY

Lambert-St Louis

Sat 2/21

7:00 am-1:35 pm

1 stop8h 35m

Monterey Regional

Wed 2/25

2:25 pm-11:56 pm

1 stop7h 31m

$318

St. LouisMonterey

STL - MRY

STLMRY

Lambert-St Louis

Wed 12/24

7:00 am-11:49 am

1 stop6h 49m

Monterey Regional

Sun 1/4

4:24 pm-11:51 pm

1 stop5h 27m

$343

St. LouisMonterey

STL - MRY

STLMRY

Lambert-St Louis

Sat 12/6

9:00 am-5:31 pm

2 stops10h 31m

Monterey Regional

Thu 12/11

7:00 am-4:27 pm

1 stop7h 27m

$348

St. LouisMonterey

STL - MRY

STLMRY

Lambert-St Louis

Sun 12/21

5:16 am-11:49 am

1 stop8h 33m

Monterey Regional

Sat 12/27

12:39 pm-10:56 pm

1 stop8h 17m

$367

ChicagoMonterey

ORD - MRY

ORDMRY

Chicago O'Hare Intl

Fri 1/30

6:05 am-8:55 pm

3 stops16h 50m

Monterey Regional

Mon 2/2

9:45 pm-9:23 pm

2 stops21h 38m

$389

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to Monterey

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 Monterey?

The month of November is, on average, the cheapest month to fly to Monterey from Illinois, with most prices found around $358. If you’re not able to fly to Monterey in November, then January is your next best option. Flight prices from Illinois to Monterey during January average around $436.

What is the cheapest day to depart on your flight to Monterey?

The cheapest day to depart from Illinois to Monterey is on a Tuesday. Travelers who choose to depart for Monterey on a Tuesday will often find tickets for as low as $432. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Monterey for around $695.

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

According to our data, the cheapest time of day to fly to Monterey is in the afternoon. momondo users have found flights departing from Illinois to Monterey in the afternoon for as low as $445. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $551.

Cheap Illinois to Monterey flight deals and tips

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

Direct flights

None
There are no direct flights from Illinois to Monterey. There are no popular flight routes from Illinois to Monterey.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Monterey Regional Airport?

    Prices for flights from Illinois to Monterey Regional Airport are updated daily.

  • How many operators does momondo search for flights from Illinois to Monterey Regional Airport?

  • How old do you have to be to fly from Illinois to Monterey Regional Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Monterey Regional Airport.

  • What documentation or ID do you need to fly to Monterey Regional Airport?

    The required travel and health documents for your Monterey Regional 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 Monterey Regional Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Monterey

Compare and see reviews for airlines that fly from Illinois to Monterey with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $276Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $358Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Monterey. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Monterey from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Monterey?

Once all potential Illinois to Monterey flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Monterey, momondo offers a useful price alert feature which will track prices for flights to Monterey from Illinois and alert you when they change.

An easier way to manage your Monterey trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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