Flights Chicago → Boston
As of May 2026, economy flights from Chicago to Boston have a typical range USD 197–267, median USD 205. Full range across all 375 offers: USD 174–441. We analyzed 375 offers from 5 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
How much do flights from Chicago to Boston cost?
Based on 375 offers · May 2026
Chicago to Boston flights ranged from USD 174 to USD 441 across 375 offers analyzed in May 2026. The chart below shows how prices distributed across all 375 offers.
These 375 offers (May 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 201 and USD 227
What hidden fees do Chicago to Boston flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Chicago to Boston routes. The breakdown below is based on 375 offers analyzed in May 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| B6 | 45 | 21% |
| UA | 45 | 20% |
| AA | 45 | 20% |
| WN | 0 | 0% |
| DL | 45 | 19% |
B6: base ~USD 157 + fees USD 45 = ~USD 202 total. Delta Air Lines: base ~USD 161 + fees USD 45 = ~USD 206 total.
Total costs diverge further when fees are added on this route. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.B6 charges 1.0x more in ancillary fees than DL on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Chicago to Boston?
5 airlines flew Chicago to Boston in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 B6 | 162 | — | 202 | 45 (22%) |
 Delta Air Lines | 14 | — | 206 | 45 (22%) |
 United Airlines | 112 | — | 224 | 45 (20%) |
 American Airlines | 56 | — | 226 | 45 (20%) |
 Southwest Airlines | 31 | — | 287 | 0 (0%) |
Where do the best Chicago → Boston prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Chicago to Boston flights
- Full-service carriers on Chicago–Boston cost 0.9x more than budget airlines (USD 219 vs USD 244 median; overall median USD 205).
- B6 charges 1.0x more in ancillary fees than DL — USD 45 vs USD 45 avg per booking.
- The same route priced USD 26 apart depending on where it was booked — the lowest median was USD 201. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Chicago to Boston cost?
- Based on 375 offers analyzed, Chicago to Boston flights range from USD 174 to USD 441, with a median price of USD 205. Search for your specific dates →
- What hidden fees should I expect on Chicago to Boston flights?
- On average, ancillary fees (bags, seat selection) add USD 39 to the base fare on Chicago to Boston flights. See itemized fees for your itinerary →
- Which airline is cheapest on Chicago to Boston including all fees?
- B6 has the lowest median fare on Chicago to Boston at USD 202 (median across 162 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Chicago–Boston flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 201. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Chicago to Boston routes?
- Chicago to Boston has 5 airlines competing, creating a price range from USD 174 to USD 441 across 375 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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