What is the cheapest airline that flies from Massachusetts to Lambert-St Louis?

Frontier, Spirit Airlines, and American Airlines are the most popular carriers operating from Massachusetts to Lambert-St Louis

How long does it take to fly to St. Louis?

Flight times from Massachusetts to St. Louis vary, but if you’re flying out of Boston and flying into St. Louis (one of the most popular routes), then the duration is 2h 55m on average. Another popular route from Massachusetts to St. Louis is flying from West Tisbury to St. Louis, which will take roughly 7h 09m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to St. Louis?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to St. Louis from Massachusetts according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

How many flights depart from Massachusetts to St. Louis on average per week?

The number of flights available between Massachusetts and St. Louis is 34 per week as of August 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

How many flights depart from Massachusetts to St. Louis on average per day?

The number of flights available between Massachusetts and St. Louis is 4 per day as of August 2025. The most frequent departure time is 7:00AM, with 51% of daily flights leaving at noon.

When did momondo last update prices for flights from Massachusetts to Lambert-St Louis Airport?

Prices for flights from Massachusetts to Lambert-St Louis Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Massachusetts to Lambert-St Louis Airport?

As of August 2025, there are 6 operators available to choose from for flights from Massachusetts to Lambert-St Louis Airport.

How old do you have to be to fly from Massachusetts to Lambert-St Louis 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 Massachusetts to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$73 Cheap Flights from Massachusetts to St. Louis in 2025

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Find the cheapest flights from Massachusetts to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:44 pm - 10:17 pmBDL-STL

5h 33m1 stop

8:17 am - 2:53 pmSTL-BDL

5h 36m1 stop

$201American Airlines

Find Deal

Tue, Sep 2 - Wed, Sep 10

6:25 am - 10:15 amBDL-STL

4h 50m1 stop

1:35 pm - 10:00 pmSTL-BDL

7h 25m2 stops

$206Southwest

Find Deal

Tue, Sep 23 - Tue, Sep 23

8:24 pm - 5:45 pmBOS-STL

22h 21m1 stop

11:32 am - 8:55 amSTL-BOS

20h 23m1 stop

$226

Find Deal

Fri, Oct 17 - Sun, Oct 19

10:30 am - 3:04 pmBDL-STL

5h 34m1 stop

10:35 am - 10:35 amSTL-BDL

23h 00m1 stop

$227

Find Deal

Thu, Sep 25 - Sun, Sep 28

9:23 am - 3:38 pmBOS-STL

31h 15m1 stop

11:17 am - 9:00 amSTL-BOS

20h 43m1 stop

$229Frontier

Find Deal

Fri, Nov 14 - Sun, Nov 16

6:30 am - 1:32 pmBOS-STL

8h 02m1 stop

10:35 am - 11:57 pmSTL-BOS

12h 22m1 stop

$234Spirit Airlines

Find Deal

Sun, Aug 31 - Sun, Sep 7

5:30 pm - 9:40 amBDL-STL

17h 10m1 stop

10:35 am - 10:35 amSTL-BDL

23h 00m1 stop

$237Spirit Airlines

Find Deal

Sat, Aug 30 - Thu, Sep 4

6:00 am - 10:49 amALB-STL

5h 49m1 stop

3:23 pm - 9:23 pmSTL-ALB

5h 00m1 stop

$237United Airlines

Find Deal

Sat, Sep 27 - Mon, Sep 29

10:04 am - 10:37 amBDL-STL

25h 33m1 stop

6:05 pm - 8:05 amSTL-BDL

13h 00m1 stop

$241Frontier

Find Deal

Thu, Oct 9 - Sun, Oct 12

6:00 am - 10:02 amBDL-STL

5h 02m1 stop

6:35 am - 2:01 pmSTL-BDL

6h 26m2 stops

$276United Airlines

Find Deal

Wed, Sep 10 - Tue, Sep 16

American Airlines flights from Massachusetts to St. Louis

Our best American Airlines deals on Massachusetts to St. Louis flight tickets

American Airlines

Sep 2

BDL5:44 pmHartford Bradley Intl

5h 33m

1 stop

STL10:17 pmLambert-St Louis

Sep 10

STL8:17 amLambert-St Louis

5h 36m

1 stop

BDL2:53 pmHartford Bradley Intl

$201

Find similar

American Airlines

Sep 6

BOS6:00 amBoston Logan Intl

10h 52m

1 stop

STL3:52 pmLambert-St Louis

Sep 9

STL6:10 amLambert-St Louis

7h 56m

1 stop

BOS3:06 pmBoston Logan Intl

$217

Find similar

American Airlines

Sep 2

BOS7:00 amBoston Logan Intl

3h 15m

STL9:15 amLambert-St Louis

Sep 4

STL9:27 amLambert-St Louis

8h 21m

1 stop

BOS6:48 pmBoston Logan Intl

$227

Find similar

Spirit Airlines flights from Massachusetts to St. Louis

Our best Spirit Airlines deals on Massachusetts to St. Louis flight tickets

Spirit Airlines

Aug 31

BOS6:30 amBoston Logan Intl

8h 02m

1 stop

STL1:32 pmLambert-St Louis

Sep 7

STL10:35 amLambert-St Louis

12h 22m

1 stop

BOS11:57 pmBoston Logan Intl

$234

Find similar

Spirit Airlines

Aug 30

BDL5:30 pmHartford Bradley Intl

17h 10m

1 stop

STL9:40 amLambert-St Louis

Sep 4

STL10:35 amLambert-St Louis

23h 00m

1 stop

BDL10:35 amHartford Bradley Intl

$237

Find similar

Spirit Airlines

Oct 4

BOS3:00 pmBoston Logan Intl

19h 40m

1 stop

STL9:40 amLambert-St Louis

Oct 7

STL10:57 amLambert-St Louis

12h 02m

1 stop

BOS11:59 pmBoston Logan Intl

$240

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Tue 9/2

5:44 pm-10:17 pm

1 stop5h 33m

Lambert-St Louis

Wed 9/10

8:17 am-2:53 pm

1 stop5h 36m

$201

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Tue 9/23

6:25 am-10:15 am

1 stop4h 50m

Lambert-St Louis

Tue 9/23

1:35 pm-10:00 pm

2 stops7h 25m

$206

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 10/17

8:24 pm-5:45 pm

1 stop22h 21m

Lambert-St Louis

Sun 10/19

11:32 am-8:55 am

1 stop20h 23m

$226

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 9/25

10:30 am-3:04 pm

1 stop5h 34m

Lambert-St Louis

Sun 9/28

10:35 am-10:35 am

1 stop23h 00m

$227

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 11/14

9:23 am-3:38 pm

1 stop31h 15m

Lambert-St Louis

Sun 11/16

11:17 am-9:00 am

1 stop20h 43m

$229

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sun 8/31

6:30 am-1:32 pm

1 stop8h 02m

Lambert-St Louis

Sun 9/7

10:35 am-11:57 pm

1 stop12h 22m

$234

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Sat 8/30

5:30 pm-9:40 am

1 stop17h 10m

Lambert-St Louis

Thu 9/4

10:35 am-10:35 am

1 stop23h 00m

$237

AlbanySt. Louis

ALB - STL

ALBSTL

Albany Intl

Sat 9/27

6:00 am-10:49 am

1 stop5h 49m

Lambert-St Louis

Mon 9/29

3:23 pm-9:23 pm

1 stop5h 00m

$237

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 10/9

10:04 am-10:37 am

1 stop25h 33m

Lambert-St Louis

Sun 10/12

6:05 pm-8:05 am

1 stop13h 00m

$241

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 9/10

6:00 am-10:02 am

1 stop5h 02m

Lambert-St Louis

Tue 9/16

6:35 am-2:01 pm

2 stops6h 26m

$276

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Massachusetts to St. Louis

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

Prices

Airlines

Other information

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

In general, August is the cheapest month to fly from Massachusetts to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $382. The month of September is another great option to travel to St. Louis, with average flight prices from Massachusetts averaging around $398.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $420. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $504. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Massachusetts in the evening is the least expensive time of day to depart. momondo users have found prices as low as $429 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $454 per ticket.

What is the cheapest Massachusetts to Lambert-St Louis flight route?

Fly from Boston Logan Intl to Lambert-St Louis for the best Massachusetts - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Massachusetts when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Massachusetts for as low as $397 on momondo.

What cabin class options are available on Massachusetts to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Massachusetts to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Massachusetts to St. Louis flights?

You could potentially save up to 18% on your flight if you consider stops on a Massachusetts to St. Louis flight.

Cheap Massachusetts to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Massachusetts to St. Louis

Best Price Found	$73
Fastest flight time	2h 55m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Massachusetts in the past 72 hours is $73. The best round-trip flight deal from Massachusetts to St. Louis found on momondo in the last 72 hours is $201.

The fastest flight from Massachusetts to St. Louis takes 2h 55m

Direct flights go from Massachusetts to St. Louis every day.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Massachusetts to Lambert-St Louis Airport?
Prices for flights from Massachusetts to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Massachusetts to Lambert-St Louis Airport?
As of August 2025, there are 6 operators available to choose from for flights from Massachusetts to Lambert-St Louis Airport.
How old do you have to be to fly from Massachusetts to Lambert-St Louis 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 Massachusetts to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Massachusetts to St. Louis?
Based on momondo bookings for flights between Massachusetts and St. Louis, the leading plane model is Embraer 175, making up 27.06% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 20.90%, Boeing 737 MAX 8 with 18.82%, and Boeing 737-700 Passenger/BBJ1 (winglets) with 7.20%.

Best airlines flying from Massachusetts to St. Louis

Compare and see reviews for airlines that fly from Massachusetts to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $83	Free Cancellation	Rating 6.3 8,045 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $113	Free Cancellation	Rating 5.8 3,219 reviews	Search Frontier flights
Delta	PriceFrom $216	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights
United Airlines	PriceFrom $257	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
American Airlines	PriceFrom $284	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $314	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Wentzville

Collinsville

Alton

St. Peters

Farmington

Festus

Glencoe

Eureka

Clayton

Edwardsville

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Massachusetts to St. Louis?

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 Massachusetts to St. Louis for you.

Can I find flights from Massachusetts to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Massachusetts to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Massachusetts to St. Louis?

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 St. Louis from Massachusetts.

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

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

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Cheap flights from Massachusetts to St. Louis from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to St. Louis departing on 10/31. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Massachusetts to St. Louis

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American Airlines flights from Massachusetts to St. Louis

Our best American Airlines deals on Massachusetts to St. Louis flight tickets

Spirit Airlines flights from Massachusetts to St. Louis

Our best Spirit Airlines deals on Massachusetts to St. Louis flight tickets

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

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How to get the cheapest flight ticket from Massachusetts to St. Louis

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 St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

What is the cheapest Massachusetts to Lambert-St Louis flight route?

Fly from Boston Logan Intl to Lambert-St Louis for the best Massachusetts - Lambert-St Louis flight prices

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

What cabin class options are available on Massachusetts to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Massachusetts to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Massachusetts to St. Louis flights?

You could potentially save up to 18% on your flight if you consider stops on a Massachusetts to St. Louis flight.

What is the cheapest airline that flies from Massachusetts to Lambert-St Louis?

Frontier, Spirit Airlines, and American Airlines are the most popular carriers operating from Massachusetts to Lambert-St Louis

What airlines fly to St. Louis?

How many flights depart from Massachusetts to St. Louis on average per day?

The number of flights available between Massachusetts and St. Louis is 4 per day as of August 2025. The most frequent departure time is 7:00AM, with 51% of daily flights leaving at noon.

How many flights depart from Massachusetts to St. Louis on average per week?

The number of flights available between Massachusetts and St. Louis is 34 per week as of August 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

How long does it take to fly to St. Louis?

Cheap Massachusetts to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Massachusetts to St. Louis

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

When did momondo last update prices for flights from Massachusetts to Lambert-St Louis Airport?

How many operators does momondo search for flights from Massachusetts to Lambert-St Louis Airport?

How old do you have to be to fly from Massachusetts to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from Massachusetts to St. Louis?

Best airlines flying from Massachusetts to St. Louis

Compare and see reviews for airlines that fly from Massachusetts to St. Louis with momondo

Traveling to a place near St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from Massachusetts to St. Louis?

Can I find flights from Massachusetts to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights from Massachusetts to St. Louis?

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

An easier way to manage your St. Louis 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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