Cheap flights from Massachusetts to St. Louis from $75
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 7/27. 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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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?
In general, September 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 $374. The month of August is another great option to travel to St. Louis, with average flight prices from Massachusetts averaging around $391.
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 $422. 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 $509. 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 $459 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 $435 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 $388 on momondo.
What cabin class options are available on Massachusetts to Lambert-St Louis flights?
There are 4 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.
What is the cheapest airline that flies from Massachusetts to Lambert-St Louis?
Spirit Airlines, Southwest, and American Airlines are the most popular carriers operating from Massachusetts to Lambert-St Louis
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 59% 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 day?
The number of flights available between Massachusetts and St. Louis is 4 per day as of June 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 33 per week as of June 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.
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
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 June 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 29.50% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 23.87%, Boeing 737-700 Passenger/BBJ1 (winglets) with 12.74%, and Boeing 737 MAX 8 with 12.47%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $107 | Free Cancellation | Rating 6.3 8,088 reviews | |||
| PriceFrom $113 | Free Cancellation | Rating 5.9 3,296 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $257 | Free Cancellation | Rating 7.4 8,838 reviews | |||
| PriceFrom $293 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $332 | Free Cancellation | Rating 8.0 4,276 reviews |
Traveling to a place near St. Louis?
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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.