STL - BOS Price
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$188 - $284
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BOS Temperature
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39.2 - 84.2 °F
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BOS Rainfall
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2.8 - 3.9 inches
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Popular in December High demand for flights, 22% potential price rise |
Cheapest in January Best time to find cheap flights, 15% potential price drop |
Round-trip from $188 From Lambert-St Louis Intl to Boston |
One-way from $108 One-way flight from Lambert-St Louis Intl to Boston |
Users have found that flying from Lambert-St Louis Intl to Boston on a Friday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.
To save on the cost of your flight from Lambert-St Louis Intl to Boston, book at least 20 days before your planned departure. Booking around this time can save you about 25% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $185 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $243.
August is one of the best times of the year to fly to Boston from Lambert-St Louis Intl. Prices for August average $206 per person but you can even find prices for as low as $50. The most expensive prices can be found in the month of December. Opting for a August flight can save you 39% on your journey compared to booking in August
When flying from Lambert-St Louis Intl to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 12% versus a flight in the afternoon.
The chart below displays the airlines Cheapflights users traveling from Lambert-St Louis Intl to Boston choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline | Cheapest | Average | Flexibility | On-time | COVID-19 safety | |
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$111 | $211 | No cancel fee | 62% | ||
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$92 | $257 | No cancel fee | 69% | ||
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$101 | $257 | No cancel fee | N/A | ||
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$92 | $260 | No cancel fee | 71% | ||
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$229 | $560 | No cancel fee | 63% |