Cheap flights from St. Louis to Cambridge (STL to CBG)

Cambridge featuring heritage architecture, a river or creek and heritage elements

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Cambridge (CBG)

American Airlines
American Airlines
United
United
Southwest Airlines
Southwest Airlines
Delta
Delta
Frontier Airlines
Frontier Airlines
JetBlue Airways
JetBlue Airways
Alaska Airlines
Alaska Airlines

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Frequently asked questions

Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to CBG last minute?

Booking your flight from Lambert Field to CBG last minute could save you a pretty penny if you strike it lucky and find a real steal. However, fares usually don’t come down in price as the date of departure nears. If you procrastinate, flights could also be booked solid or the best seats long gone. If you’d prefer to play it safe, book well in advance of when you want to leave. It’s worth noting that some of the best deals can be found up to a year in advance. If your favorite airline hasn’t released its airfares yet, check back regularly as deals are constantly updated on Expedia.

What airports do you fly into for Cambridge from St. Louis?

Cambridge (CBG), Stansted Airport (STN) and Luton Airport (LTN) are your choices when jetting off from St. Louis to Cambridge. About 2 mi east of downtown Cambridge, Cambridge (CBG) is the city’s principal hub. Keep in mind things such as flight schedules and the distance to your hotel before choosing your airport. Jesus College and Trinity College are a couple of fantastic attractions to put on your must-see list when you get to your destination.

Can I change the date of my flight from STL to CBG?

You can easily make changes to your Lambert Field to CBG flight by logging in to the Expedia Trips portal. Before making any amendments, read over the rules and conditions in your itinerary to see what you’re able to do and if any charges apply. Some carriers charge a change fee per person, in addition to any difference in fares. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also browse our Customer Service portal for more info and to chat with our Virtual Agent.

Travel information

Origin airport	Lambert-St. Louis Intl.
Destination airport	Cambridge
Distance	4190 mi

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The cheapest times to fly from St. Louis to Cambridge

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Cambridge are during the month of . You can find some of the cheapest flights from St. Louis to Cambridge with Expedia's search tool and vast selection of airlines.

The best time to book a flight from St. Louis to Cambridge

Sunday is one of the best days to book for cheap flights from St. Louis to Cambridge: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from St. Louis to Cambridge

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Cambridge in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Cambridge flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Cambridge airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

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Cheap Flights from St. Louis (STL) to Cambridge (CBG)

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