Are these live prices?

No. These are rounded estimates for comparing options—not live airline fares, and not something you can pay on Farewise. When you are ready to buy, check a travel site for your dates to see current prices.

Why can the cheapest flight cost more later?

The first price you see often leaves out seat fees, checked bags, and other extras. By checkout, the same trip can cost more than the headline fare. We include typical add-ons so you see that gap sooner—your final total still depends on what you choose.

Why only direct flights?

We stick to nonstop Chicago–London so you compare similar trips. Connecting flights through other US or European hubs can be cheaper, but they are a different kind of trip and shouldn’t be compared head-to-head with a nonstop.

How accurate are these estimates?

They are rough guides, not exact quotes. Real prices change with travel dates, demand, taxes, and what you add at booking. Use these totals to see which option usually costs more overall—not to budget to the dollar.

Which London airport do these flights use?

Mostly Heathrow (LHR), with some service to Gatwick (LGW). Our estimates are written at the London metro level so the comparison stays apples-to-apples; the airline you pick on Skyscanner or Expedia will determine the exact airport. Heathrow is closest to central London by train.

Why do arrivals show the next calendar day?

London is six hours ahead of Chicago, and most nonstops cross the Atlantic overnight. An evening departure from ORD lands in London the following morning local time. Your ticket will show the exact local arrival time and date.

Can I book directly through Farewise?

No. Farewise does not sell tickets or take payment. Use Compare Current Availability or Check Current Prices on Expedia to search this route in a new tab—your booking happens with them or the airline, not with Farewise.

Direct route guide

Best Flights from Chicago to London

Farewise compares direct Chicago–London trips using rounded estimated total trip cost—base fare plus typical seat and checked-bag fees when they often apply. Cards add schedule and cabin detail so you can weigh tradeoffs before booking elsewhere. Farewise does not sell tickets or show live fares.

Three ways to compare: Best Value, Cheapest After Fees, and Best Comfort—examples, not every airline or flight. Totals stay rounded: guidance, not false precision.

Farewise Insight

ORD–London is a competitive overnight market: headline fares understate total cost when bag and seat rules differ sharply between carriers on the same route.

How Farewise Works

Compare curated flight options based on estimated total trip cost, comfort, and timing — then click through to compare current availability on a booking site when you are ready.

Farewise does not sell flights. We compare curated options to help you decide before booking.

What we assume on this page

Direct flights only — nonstop Chicago O’Hare to the London area (for example Heathrow or Gatwick). We do not include connections through other cities.
Cabin types — economy and premium economy only, not business or first.
Estimated bag fee — when a fare type often excludes a checked bag, we add a rounded allowance for one checked bag so totals stay comparable.
Estimated seat fee — when seat selection is usually paid separately for that fare type, we add a rounded allowance instead of assuming it is free.

The same rules apply to all three cards so comparisons stay fair. Airlines change fees; what you see at checkout is final.

The Farewise Take

Which option usually wins

ORD–London is short and competitive, so Best Value standard economy usually wins: it avoids basic-economy limits on an overnight while staying within roughly $140 of the cheapest total after fees. Premium economy is a comfort splurge, not a value play, on a sub-8-hour crossing.

Three ways to compare this route

Same assumptions on every card. Best Value for balance; Cheapest After Fees for the lowest estimated total after typical fees here; Best Comfort when cabin space matters more—confirm current availability on a booking site when ready.

Best Value for Most Travelers

Late-evening nonstop, standard economy

Departs 9:15 PM (Chicago local) · 7h 50m · Arrives 11:05 AM (London local)

Estimated total: $700

Includes typical bag and seat fees where they apply. Final price depends on airline, date, and what you choose at checkout.

Why we'd pick this: Balanced cost in standard economy with a comfortable overnight departure—sleep on the flight, land in London late morning. A reasonable default when you want predictable pricing without paying for a premium cabin.
What you get: About $140 above the cheapest option here. You also skip the seat-and-bag friction that comes with the lowest fares. This comparison uses estimated totals so the gap reflects the fees and add-ons you’re likely to deal with at checkout—not just the first number you see.
Trade-offs: Not the rock-bottom fare. The cheapest ticket often catches up once bags, seats, and fare rules enter the picture.
Another option may be better if…: Budget drives the decision and restrictive fare rules won't bother you—Cheapest After Fees is a fair choice. You need to be sharp right after landing and the fare gap is manageable—Best Comfort may suit you better.
Works well if…: You want a balanced pick—standard economy without bare-bones fare rules or paying for a cabin upgrade you don't need.
Assumptions that matter here: The $140 gap versus Cheapest After Fees is treated as the price of standard-economy flexibility on this comparison.
Learn more: How Farewise Estimates Total Trip Cost

Opens a booking site in a new tab. Farewise does not sell tickets.

Compare Current Availability

Cheapest After Fees

Evening nonstop, basic economy

Departs 7:50 PM (Chicago local) · 7h 45m · Arrives 9:35 AM (London local)

Estimated total: $560

Includes typical bag and seat fees where they apply. Final price depends on airline, date, and what you choose at checkout.

Why we'd pick this: Lowest estimated total once typical seat and bag fees are added—basic economy rules apply. Pick it when the lowest overall cost matters more than where you sit or how strict the change rules are.
What you get: About $140 less than Best Value with typical extras included—as low as this route gets without checkout surprises.
Trade-offs: Basic economy usually saves on the headline fare, then charges you back through seat, bag, and rule limits once you're traveling.
Another option may be better if…: The savings are slim once fees land, which happens often—Best Value is usually the smarter middle ground. Arriving functional matters more than the fare difference—Best Comfort is worth a look.
Works well if…: Saving money comes first, and you're comfortable with the seat and bag limits that come with the lowest fares.
Assumptions that matter here: Basic-economy style limits on bags, seats, and changes are treated as part of the real cost—not optional extras.
Learn more: Basic Economy Explained
How Farewise Estimates Total Trip Cost

Opens a booking site in a new tab. Farewise does not sell tickets.

Compare Current Availability

Best Comfort Pick

Evening nonstop, premium economy

Departs 8:30 PM (Chicago local) · 7h 50m · Arrives 10:20 AM (London local)

Estimated total: $1,240

Includes typical bag and seat fees where they apply. Final price depends on airline, date, and what you choose at checkout.

Why we'd pick this: More room and a calmer overnight crossing for a higher upfront cost. Worth it when sleep on the way over matters more than saving a few hundred dollars.
What you get: About $540 above Best Value for meaningfully more space and a calmer cabin.
Trade-offs: A much higher ticket price—tough to justify unless how you feel after landing really matters for this trip.
Another option may be better if…: You won't need the extra space on this trip—Best Value is plenty for most travelers. Price is the only factor that matters—Cheapest After Fees can work if you accept what you're giving up.
Works well if…: You'll feel this flight the next day, and arriving rested matters more than keeping the fare low.
Assumptions that matter here: Comfort is judged from cabin step-up (premium economy space and recline) relative to the economy options on this page—not from live seat maps or amenities inventories.
Block time and overall schedule pattern are similar across the featured options, so the comfort call is mainly cabin and recovery—not a faster itinerary.
Still uncertain: Comfort magnitude is framed qualitatively from cabin class; we do not claim measured sleep or amenity outcomes.

Opens a booking site in a new tab. Farewise does not sell tickets.

Compare Current Availability

Featured options, compact view

Same numbers as the cards, as a table—one estimated total per row, not a new calculation.

Comparison of three example trip types on this route. Dollar amounts are rounded estimated totals, not live airline prices.
Label	Itinerary	Departure (Chicago local)	Arrival (London local)	Duration	Fare type	Estimated total
Best Value for Most Travelers	Late-evening nonstop, standard economy	9:15 PM	11:05 AM	7h 50m	Standard economy	Estimated total: $700
Cheapest After Fees	Evening nonstop, basic economy	7:50 PM	9:35 AM	7h 45m	Basic economy	Estimated total: $560
Best Comfort Pick	Evening nonstop, premium economy	8:30 PM	10:20 AM	7h 50m	Premium economy	Estimated total: $1,240

Matches the cards. Taxes, fare rules, dates, and checkout extras can still change the total and which option looks cheapest.

Good to know on this route

Heathrow access: most nonstops land at Heathrow with a fast train into central London; a Gatwick arrival adds transfer time.
Overnight + 6-hour shift: evening O'Hare departures arrive late morning, so expect a short night and plan accordingly.
Winter weather: Chicago winters bring de-icing and delay risk—build in buffer for tight onward connections.

How Farewise estimates cost

Each card is one estimated total trip cost: base fare plus common add-ons on long hauls (seat choice, checked bag) when the fare does not already include them. Not live prices—you cannot buy tickets on Farewise.

What is included? Whole-dollar rounding. The same fee types across cards so you compare full totals, not a headline fare that skips bags and seats.

Why is this helpful? You see tradeoffs faster—especially when the cheapest-looking fare is basic economy and extras add up.

Why might prices vary? Airlines change fares by date, demand, and availability; taxes, currency, and checkout choices move the final total. When you buy, use Compare Current Availability or Check Current Prices on Expedia on each card to see what is available now.

Read the full guide on how Farewise estimates total trip cost

Frequently asked questions

Are these live prices?: No. These are rounded estimates for comparing options—not live airline fares, and not something you can pay on Farewise. When you are ready to buy, check a travel site for your dates to see current prices.
Why can the cheapest flight cost more later?: The first price you see often leaves out seat fees, checked bags, and other extras. By checkout, the same trip can cost more than the headline fare. We include typical add-ons so you see that gap sooner—your final total still depends on what you choose.
Why only direct flights?: We stick to nonstop Chicago–London so you compare similar trips. Connecting flights through other US or European hubs can be cheaper, but they are a different kind of trip and shouldn’t be compared head-to-head with a nonstop.
How accurate are these estimates?: They are rough guides, not exact quotes. Real prices change with travel dates, demand, taxes, and what you add at booking. Use these totals to see which option usually costs more overall—not to budget to the dollar.
Which London airport do these flights use?: Mostly Heathrow (LHR), with some service to Gatwick (LGW). Our estimates are written at the London metro level so the comparison stays apples-to-apples; the airline you pick on Skyscanner or Expedia will determine the exact airport. Heathrow is closest to central London by train.
Why do arrivals show the next calendar day?: London is six hours ahead of Chicago, and most nonstops cross the Atlantic overnight. An evening departure from ORD lands in London the following morning local time. Your ticket will show the exact local arrival time and date.
Can I book directly through Farewise?: No. Farewise does not sell tickets or take payment. Use Compare Current Availability or Check Current Prices on Expedia to search this route in a new tab—your booking happens with them or the airline, not with Farewise.

Explore more on Farewise

Farewise home — compare estimated trip totals and tradeoffs
How Farewise compares direct international trips using rounded estimated totals (not live fares) before you book elsewhere.
Los Angeles to London direct flights
Another US-to-London option with the same Best Value / Cheapest After Fees / Best Comfort breakdown—useful if your trip could start from the West Coast instead.
New York to Paris direct flights
A different transatlantic destination from the US East Coast, written the same way.

Updates for this route

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Best Flights from Chicago to London

Route insight

How Farewise Works

What we assume on this page

Which option usually wins

Good to know on this route

How Farewise estimates cost

Frequently asked questions

Related routes

Updates for this route

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