$127 Cheap United flights from St. Louis to Boston (STL to BOS)

Find The Best Day To Fly from St. Louis to Boston

Amazing United STL to BOS Flight Deals

The cheapest flights to Logan Intl. found within the past 7 days were $207 round trip and $127 one way. Prices and availability subject to change. Additional terms may apply.

Thu, May 16 - Sat, May 18
STL
St. Louis
BOS
Boston
$207 Roundtrip, found 2 days ago
$207
Roundtrip
found 2 days ago
Select United flight, departing Thu, May 16 from St. Louis to Boston, returning Sat, May 18, priced at $207 found 2 days ago
Wed, May 15 - Wed, May 29
STL
St. Louis
BOS
Boston
$254 Roundtrip, found 4 days ago
$254
Roundtrip
found 4 days ago
Select United flight, departing Wed, May 15 from St. Louis to Boston, returning Wed, May 29, priced at $254 found 4 days ago

BOS From STL Economy Coach Packages on Similar Airlines

Prices and availability subject to change. Additional terms may apply.
Boston Harbor Hotel

Boston Harbor Hotel

5 out of 5
Save 100% on your flight
per person
Jul 11 - Jul 15
Roundtrip flight included
St. Louis (STL) to Boston (BOS)
Raffles Boston

Raffles Boston

5 out of 5
Save 100% on your flight
per person
Jul 11 - Jul 15
Roundtrip flight included
St. Louis (STL) to Boston (BOS)
Fairmont Copley Plaza, Boston

Fairmont Copley Plaza, Boston

4.5 out of 5
Save 100% on your flight
per person
Jul 11 - Jul 15
Roundtrip flight included
St. Louis (STL) to Boston (BOS)
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Frequently asked questions

Can I catch a flight from Lambert Field to Logan Intl. Airport (BOS) right now?
For information on any present Logan Intl. Airport (BOS) travel advice and quarantine requirements, go to our Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught up.
What terminal is United Airlines at St. Louis Lambert International Airport?
Check your boarding pass to find out which STL terminal you’ll be departing from on your way to Logan Intl. Airport (BOS) with United Airlines. If you can’t find the information on there, consult your airline.
Are there United Airlines non-stop flights from STL to BOS?
There aren’t any nonstop flights with United Airlines from Lambert-St. Louis Intl. Airport (STL) to BOS. You will have at least one stopover, so use the time to stretch out those legs before boarding your connecting flight.
How long is a United Airlines flight from STL to BOS?
If weather conditions are right and all goes according to plan, your United Airlines flight from STL to BOS will take about 3 hours and 58 minutes. Use that time to fine tune your travel itinerary before you hit the tarmac.
How many direct and indirect flights does United Airlines fly from STL to BOS?
You’ll have loads of options if you’d prefer to fly with United Airlines between STL and BOS. It’s currently operating at least 6 flights every day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Logan Intl. Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from St. Louis STL to Boston BOS 

To find the best deals on flights to St. Louis from Boston with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to Boston BOS with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $207 to $254, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from St. Louis STL to Boston BOS 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from St. Louis to Boston costs from $127. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Boston BOS from  St. Louis STL with United 

To find a cheap United flight from St. Louis STL to Boston BOS, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from St. Louis STL to Boston BOS 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as May, or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to Boston BOS with United 

If you’re keen to be on Boston soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from St. Louis STL to Boston BOS 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Boston BOS from  St. Louis STL with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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