What are the cheapest airlines flying from Monterey to St. Louis round-trip?

Our cheapest airline available from Monterey to St. Louis is Alaska Airlines. Our recent data shows that you can find tickets from as low as $346 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $347 and $407 round-trip. Alaska Airlines is 24% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Monterey to St. Louis one-way?

$174 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $249 and $254, respectively.

What is the cheapest day to fly from Monterey to St. Louis?

Travelers seeking maximum savings on their Monterey to St. Louis flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest day to fly round-trip from Monterey to St. Louis?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Monterey to St. Louis?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 36 days in advance, which can save you up to 145% on flights from Monterey to St. Louis compared to booking the week you need them. Waiting 36 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $352. For sooner than that we have options available in the next 3 days from $358.

What is the cheapest month to fly from Monterey to St. Louis?

Flights from Monterey to St. Louis lean towards being more expensive in June. Prices are generally better when you fly from Monterey to St. Louis in January, with the cheapest ticket starting at $152.

Can I find deals for flights from Monterey to St. Louis that include hotel bookings?

Yes. In addition to deals on Monterey to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Monterey to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Monterey to St. Louis.

Can I find deals for business class flights from Monterey to St. Louis?

Yes. Cheapflights offers flight deals from Monterey to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$174+ Flights from Monterey to St. Louis

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Cheap flight deals from Monterey to St. Louis

Round-trip from	$346 (Alaska Airlines)
One-way from	$174 (American Airlines)
Popular in	December
Cheapest in	June
Average price	$482

From Monterey Regional to Lambert-St Louis

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One-way flight from Monterey Regional to Lambert-St Louis

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Highest demand for flights based on searches. 13% potential increase in price ($74 potential increase over avg. RT price).

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Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Monterey to St. Louis

Cheapest flights from Monterey to St. Louis
Explore the most affordable flight options available from Monterey to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

sáb. 12/62:25 pmMRY - STL

1 stop7h 31mAlaska Airlines

mié. 12/107:00 amSTL - MRY

1 stop8h 35mAlaska Airlines

Deal found 6/30

$346

lun. 11/177:50 amMRY - STL

1 stop7h 13mUnited Airlines

vie. 11/211:35 pmSTL - MRY

1 stop9h 32mUnited Airlines

Deal found 7/2

$347

mié. 7/1612:18 pmMRY - STL

1 stop8h 39mAmerican Airlines

dom. 7/205:30 amSTL - MRY

1 stop7h 58mAmerican Airlines

Deal found 6/30

$407

Best flights from Monterey to St. Louis
Discover carefully curated flight deals from Monterey to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 3, 2025.

sáb. 12/62:25 pmMRY - STL

1 stop7h 31mAlaska Airlines

mié. 12/107:00 amSTL - MRY

1 stop8h 35mAlaska Airlines

Deal found 6/30

$346

lun. 11/177:50 amMRY - STL

1 stop7h 13mUnited Airlines

vie. 11/211:35 pmSTL - MRY

1 stop9h 32mUnited Airlines

Deal found 7/2

$347

mié. 7/1612:18 pmMRY - STL

1 stop8h 39mAmerican Airlines

dom. 7/205:30 amSTL - MRY

1 stop7h 58mAmerican Airlines

Deal found 6/30

$407

Last-minute flights from Monterey to St. Louis
Discover last-minute flight deals from Monterey to St. Louis. Data last updated julio 3, 2025 and is based on user searches.

sáb. 7/125:15 amMRY - STL

1 stop5h 31mUnited Airlines

dom. 7/276:00 amSTL - MRY

1 stop7h 05mUnited Airlines

Deal found 7/1

$549

sáb. 7/126:46 pmMRY - STL

1 stop17h 40mAlaska Airlines

dom. 7/277:32 pmSTL - MRY

1 stop24h 37mAlaska Airlines

Deal found 6/30

$898

mié. 7/1612:18 pmMRY - STL

1 stop8h 39mAmerican Airlines

dom. 7/205:30 amSTL - MRY

1 stop7h 58mAmerican Airlines

Deal found 6/30

$407

mié. 7/1610:25 amMRY - STL

2 stops11h 34mUnited Airlines

sáb. 7/196:00 amSTL - MRY

1 stop7h 05mUnited Airlines

Deal found 7/2

$412

One-way flights from Monterey to St. Louis
Search for one-way flight options from Monterey to St. Louis. Find affordable one-way fares based on user searches. Data last updated julio 3, 2025.

sáb. 8/94:03 pmMRY - STL

1 stop6h 13mAmerican Airlines

Deal found 7/2

$174

mié. 8/65:15 amMRY - STL

1 stop5h 31mUnited Airlines

Deal found 7/1

$249

mar. 7/226:00 amMRY - STL

2 stops10h 35mAlaska Airlines

Deal found 7/2

$254

vie. 7/184:03 pmMRY - STL

3 stops42h 07mMultiple Airlines

Deal found 7/3

$327

Cheapflights Fare Finder

Use the filters below to find and compare flights from Monterey to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

sáb. 12/6

2:25 pm-11:56 pm

1 stop7h 31m

Lambert-St Louis

mié. 12/10

7:00 am-1:35 pm

1 stop8h 35m

$346

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

lun. 11/17

7:50 am-5:03 pm

1 stop7h 13m

Lambert-St Louis

vie. 11/21

1:35 pm-9:07 pm

1 stop9h 32m

$347

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

mié. 7/16

12:18 pm-10:57 pm

1 stop8h 39m

Lambert-St Louis

dom. 7/20

5:30 am-11:28 am

1 stop7h 58m

$407

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

sáb. 8/9

4:03 pm-12:16 am

1 stop6h 13m

$174

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

mié. 8/6

5:15 am-12:46 pm

1 stop5h 31m

$249

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

mar. 7/22

6:00 am-6:35 pm

2 stops10h 35m

$254

MontereySt. Louis

MRY - STL

MRYSTL

Monterey Regional

vie. 7/18

4:03 pm-12:10 pm

3 stops42h 07m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Monterey to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Monterey with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Monterey to St. Louis

What is the cheapest month to book a flight from Monterey to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Monterey to St. Louis (average of $311). Flying from Monterey to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MRY to STL?

Unlike at noon, when flights are generally more expensive, you can save up to 59% on flights from Monterey to St. Louis by exploring options for tickets in the afternoon.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Alaska Airlines, United Airlines, and American Airlines from Monterey to St. Louis. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,861 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What are the cheapest airlines flying from Monterey to St. Louis round-trip?
Our cheapest airline available from Monterey to St. Louis is Alaska Airlines. Our recent data shows that you can find tickets from as low as $346 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $347 and $407 round-trip. Alaska Airlines is 24% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Monterey to St. Louis one-way?
$174 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $249 and $254, respectively.
Can I find deals for flights from Monterey to St. Louis that include hotel bookings?
Yes. In addition to deals on Monterey to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Monterey to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Monterey to St. Louis.
Can I find deals for business class flights from Monterey to St. Louis?
Yes. Cheapflights offers flight deals from Monterey to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Monterey to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Monterey to St. Louis (average of $311). Flying from Monterey to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

O'Fallon

Maryland Heights

Fairview Heights

Collinsville

Eureka

St. Peters

Glencoe

Alton

Festus

Chesterfield

Farmington

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Monterey to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$316	Average$468	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$351	Average$466	FlexibilityNo cancel fee	On-time69%

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$174+ Cheap flights from Monterey to St. Louis (MRY - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Monterey to St. Louis with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Monterey to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Monterey to St. Louis

Cheapest flights from Monterey to St. LouisExplore the most affordable flight options available from Monterey to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

Explore the most affordable flight options available from Monterey to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Monterey to St. Louis that are best for you.

Best time to book a flight from Monterey to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Monterey with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Monterey to St. Louis

What is the cheapest month to book a flight from Monterey to St. Louis?

What is the cheapest time of day to fly from MRY to STL?

Find hourly flight availability from Monterey to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 3, 2025.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Alaska Airlines, United Airlines, and American Airlines from Monterey to St. Louis. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Monterey to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Monterey to St. Louis round-trip?

What are the cheapest airlines to fly from Monterey to St. Louis one-way?

Can I find deals for flights from Monterey to St. Louis that include hotel bookings?

How can I find direct flights from Monterey to St. Louis?

Can I find deals for business class flights from Monterey to St. Louis?

What is the cheapest month to book a flight from Monterey to St. Louis?

Traveling to a place near Monterey?

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Alternative routes for Monterey to St. Louis

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Top 2 airlines flying from Monterey to St. Louis

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Cheapest flights from Monterey to St. Louis
Explore the most affordable flight options available from Monterey to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.