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FlightLogic is an independent, advertising-supported information service that lets you compare airlines, airports, hotels, and travel products. We do not provide financial advice and we do not recommend specific products or providers. Links marked * are advertising links and may earn us commission at no extra cost to you — always read the terms of any product before booking or applying. Learn more about how we make money.

Verdict

Istanbul Airport (IST) scores higher overall at 8.5/10 versus London Heathrow Airport (LHR) at 7.8/10.

Score comparison

Metric Istanbul Airport London Heathrow Airport
FlightLogic Score 8.5 7.8
On-Time Performance 8.3 7.1
Passenger Experience 8.4 7.6
Facilities & Comfort 8.8 8.7
Lounge Score 9.0 8.5
City Istanbul London
Country Turkey United Kingdom
Terminals 1 mega-terminal 4 terminals (T2–T5)
Annual passengers 76M+ 83M+

Operational comparison

Transport links, lounge access, connection times, and UK261 eligibility — verify locally before travel.

Policy IST — Istanbul LHR — London
Rail / public transport M11 metro to city; Havaist and taxiElizabeth line, Heathrow Express, Piccadilly line — all terminals
To city centre ~45–60 min to Sultanahmet by metro/taxi15 min (Heathrow Express) to 45 min (Elizabeth line off-peak)
Lounge day pass Turkish Airlines lounge for eligible tickets; limited paid access£40–£55 walk-up; Priority Pass at Plaza Premium/Aspire
Min. connection time 90+ min — terminal is vast60–90 min inter-terminal; 75 min+ landside transfer
Primary hub carriers Turkish Airlines (dominant hub carrier)British Airways (T5), Virgin Atlantic (T3), Star Alliance (T2)

Detailed profiles

Istanbul, Turkey · IST · #1 in this comparison

Istanbul Airport

1 mega-terminal · 76M+ passengers/year

8.5 / 10

How good is Istanbul Airport?

Istanbul Airport (IST) scores 8.5/10 (Excellent) on FlightLogic's airport index — combining on-time performance (8.3), passenger experience (8.4), and facilities (8.8). Lounge quality rates 9.0/10. See full airport guide →

In short

Istanbul Airport (IST) is Turkish Airlines' mega-hub, rated 8.5/10 on FlightLogic. The 2019 single-terminal design handles 76M+ passengers with one of the world's largest business lounges. Ideal for Europe-Asia-Africa connections on Turkish Airlines. Allow 90+ minutes for connections.

FlightLogic Score 8.5 Excellent
On-time 8.3 Departure reliability
Experience 8.4 Staff, queues, cleanliness
Facilities 8.8 Food, shops, seating
Lounges 9.0 Lounge quality
Rating basis Editorial FlightLogic methodology

Score breakdown

Modelled on industry airport indices — on-time data, facilities ratings, and editorial experience signals combined into a single FlightLogic score.

On-Time Performance
8.3
Passenger Experience
8.4
Facilities & Comfort
8.8
Lounge score 9.0/10

Highlights

  • Single mega-terminal opened 2019 — one of the world's largest airport buildings under one roof
  • Turkish Airlines Business Lounge: 60,000+ sqm with cinema, golf simulator, museum, and extensive dining
  • 130+ country connections via Turkish Airlines — one of the world's most connected hubs by country count
  • Istanbul scores 8.5/10 on FlightLogic with strong facilities (8.8/10) — lounge score 9.0/10

Overview

Massive new hub designed for Turkish Airlines with impressive lounges and growing route network.

Turkish Airlines lounge and terminal

The Turkish Airlines Business Lounge at IST spans over 60,000 square metres — one of the largest in the world — with multiple dining areas, a cinema, golf simulator, museum section, and prayer rooms. Business class and Star Alliance Gold passengers on Turkish Airlines access it free.

The single-terminal design means all connections are airside without inter-terminal transfers, but the terminal is vast — allow generous connection times of 90+ minutes for international-to-international connections.

Istanbul as a connection hub

Turkish Airlines flies to more countries than any other airline, making IST ideal for reaching secondary cities in Africa, Central Asia, and the Balkans that lack direct flights from Western Europe.

Compare IST against DOH (Qatar) and DXB (Emirates) for similar Europe-Asia routings — Turkish often wins on fare price; Gulf carriers win on premium product consistency.

London, United Kingdom · LHR · #2 in this comparison

London Heathrow Airport

4 terminals (T2–T5) · 83M+ passengers/year

7.8 / 10

How good is London Heathrow Airport?

London Heathrow Airport (LHR) scores 7.8/10 (Very Good) on FlightLogic's airport index — combining on-time performance (7.1), passenger experience (7.6), and facilities (8.7). Lounge quality rates 8.5/10. See full airport guide →

In short

Heathrow (LHR) is the UK's main long-haul hub with four terminals, the Elizabeth line and Heathrow Express rail links, and the country's best airline lounges including BA's Concorde Room (T5), Virgin Clubhouse (T3), and Amex Centurion (T3). Allow extra connection time between terminals — transfers require landside bus or train. Under UK261, delays of 3+ hours on departing LHR flights qualify for fixed cash compensation regardless of airline.

FlightLogic Score 7.8 Very Good
On-time 7.1 Departure reliability
Experience 7.6 Staff, queues, cleanliness
Facilities 8.7 Food, shops, seating
Lounges 8.5 Lounge quality
Rating basis Editorial FlightLogic methodology

Score breakdown

Modelled on industry airport indices — on-time data, facilities ratings, and editorial experience signals combined into a single FlightLogic score.

On-Time Performance
7.1
Passenger Experience
7.6
Facilities & Comfort
8.7
Lounge score 8.5/10

Highlights

  • Four terminals: BA and oneworld dominate Terminal 5; Virgin Atlantic, Delta, and several SkyTeam carriers use Terminal 3; Terminal 2 serves Star Alliance; Terminal 4 handles select oneworld and Gulf carriers
  • Rail access: Elizabeth line to central London (~45 min, off-peak fares from ~£12.80), Heathrow Express to Paddington (~15 min, premium pricing), and Piccadilly line Tube (~50 min, cheapest option)
  • Premium lounges: Concorde Room and Galleries (BA T5), Virgin Clubhouse (T3), Centurion Lounge (T3), Plaza Premium and Aspire across multiple terminals
  • UK261 coverage: any flight departing LHR is covered for delay compensation — claim £220–£520 depending on distance and delay length

Overview

London Heathrow is the UK's primary international hub and Europe's busiest airport by passenger volume, handling around 83 million travellers a year across four active terminals. Its strength is unmatched global connectivity — particularly long-haul routes to North America, the Middle East, and Asia — and a lounge portfolio that includes British Airways' Concorde Room, Virgin Atlantic's Clubhouse, and the American Express Centurion Lounge. Weaknesses are well documented: terminal sprawl, occasional ATC-related delays, and a passenger experience that can feel transactional outside premium cabins.

Terminal guide: which airline flies from where

Terminal 5 is British Airways' fortress hub — virtually all BA long-haul and short-haul flights depart from T5, along with select Iberia services. If you hold BA Gold or are flying Club World or First, the First Wing check-in and Concorde Room are here. Terminal 3 hosts Virgin Atlantic, Delta, Air France, KLM, and several Middle Eastern carriers; it is also where the Amex Centurion Lounge and Virgin Clubhouse sit side by side. Terminal 2 is the Star Alliance terminal (Lufthansa, Singapore Airlines, Air Canada, United on some routes). Terminal 4 handles Cathay Pacific, Malaysia Airlines, Qatar Airways on select rotations, and Royal Jordanian.

Inter-terminal transfers require leaving security unless you are on a through-checked connection with a minimum connection time built into your ticket. The free transit train between terminals runs airside at T2/T3/T5; T4 requires a bus. Budget 60–90 minutes for a landside terminal change.

Getting to and from Heathrow

The Elizabeth line (opened 2022, fully integrated 2023) is now the best value rail option for most central London destinations, running from all terminals through Paddington, Liverpool Street, and Canary Wharf. Off-peak fares are substantially cheaper than the Heathrow Express. The Heathrow Express remains the fastest option to Paddington at 15 minutes but carries a premium fare (£25+ one-way). The Piccadilly line is the budget choice — slower but direct to Zone 1.

National Express and other coach services connect LHR to cities across the UK. Black cabs and ride-hail operate from all terminals; expect £50–£80 to central London depending on traffic. Driving is discouraged: drop-off charges apply and parking is expensive.

Lounge access at Heathrow

Heathrow has the strongest lounge selection of any UK airport. British Airways operates Galleries Club, Galleries First, and the Concorde Room in Terminal 5 — the Concorde Room is restricted to same-day BA First passengers and BA Gold/Gold Guest List members on long-haul Club World. Virgin Atlantic's Clubhouse in Terminal 3 is among the best business lounges in the world, with a la carte dining and spa treatments. The American Express Centurion Lounge in T3 offers cardholders a Michelin-chef-designed menu but no runway views.

Priority Pass and DragonPass holders can access Plaza Premium, Aspire, and Club Aspire lounges across terminals, though quality varies and peak-time entry is not guaranteed. Day passes typically cost £40–£55 walk-up.

FAQ

Which is better, Istanbul Airport or London Heathrow Airport?

Istanbul Airport (IST) scores higher overall at 8.5/10 versus London Heathrow Airport (LHR) at 7.8/10.

Which has better lounges, IST or LHR?

Istanbul Airport (IST) scores higher for lounges at 9.0/10, versus London Heathrow Airport at 8.5/10.

Which airport is more on-time, IST or LHR?

Istanbul Airport (IST) has stronger on-time performance at 8.3/10 versus London Heathrow Airport (LHR) at 7.1/10.