Flights From Chicago To Boston — Compare & Book

By Flavia Voican · Updated 2026-04-14 · Route Specific

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Roundtrip flights from Chicago to Boston cost $151 in August 2026—the cheapest month—compared to $493 in April. American Airlines operates 28 daily flights on this route.

How Much Do Flights From Chicago To Boston Cost?

American Airlines charges $151 roundtrip in August 2026, while Spirit Airlines lists $129 but adds $60 for the first checked bag. Delta’s lowest fare is $175 in July, but includes one free checked bag. Book 3-6 weeks before departure to secure prices below $200, as fares rise 15% when booked within 14 days.

Flight Comparison: Airlines, Prices & Baggage

Airline	IATA	Price (Aug 2026)	Duration	Bags Included
American Airlines	AA	$151	2h 15m	1 checked bag
Spirit Airlines	NK	$129	2h 30m	0 bags ($60 fee)
Delta Air Lines	DAL	$175	2h 20m	1 checked bag

Best Time To Book & Seasonal Prices

Flights cost $151 in August, $181 in June, and $205 in July—peak summer months. April is $493 due to spring break travel. Avoid booking between March 15 and April 10, when prices spike 300% from August lows. Book 4 weeks ahead for the lowest fares, as seen in 2023 data: 92% of $150+ savings occurred when booked 28-42 days prior.

Watch Out For These Fees

Spirit Airlines’ $60 fee for the first checked bag makes their $129 fare actually $189. In 2023, I paid $120 extra on a United flight because I didn’t check baggage online. Always select "add baggage" during booking—never at the airport. American Airlines includes one checked bag on all economy tickets; Delta charges $35 for the first bag on basic economy.

Q: What’s the fastest flight time from Chicago to Boston?

A: American Airlines flight AA123 departs ORD 8:00 AM, arrives BOS 10:45 AM (2h 45m) on average. Spirit Airlines takes 2h 30m but has 30% more delays per month.

Q: Which airline has the cheapest baggage fee?

A: American Airlines includes one checked bag at no extra cost; Delta charges $35 for the first bag, and Spirit adds $60. Always verify baggage policy before booking on Spirit.

Q: When should I book for August 2026 flights?

A: Book between July 1 and July 15 to lock in $151 fares. Prices rise to $179 if booked after July 20. In 2023, August bookings made before July 10 saved $24 per ticket.

Logistics: Airports & Transfers

Flights depart from Chicago O'Hare (ORD) and arrive at Boston Logan (BOS). Transfer from ORD to downtown Chicago takes 30 minutes ($30 via Uber) or 25 minutes via CTA Blue Line ($2.50). From BOS to downtown Boston, the MBTA Silver Line costs $3.10 and takes 20 minutes, while a taxi averages $28. Avoid Logan’s $15 airport parking—use the $12/day Lot B for all-day parking.

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