Delta Air Lines is the Atlanta-based SkyTeam carrier with nine US hubs, while Turkish Airlines is Turkey's Star Alliance flag carrier flying almost everything through Istanbul Airport. Travellers compare them mainly on transatlantic and US–Middle East, Asia and Africa journeys, where Turkish connects at Istanbul and Delta uses its US hubs and partners.
Quick verdict
Both are full-service airlines. Delta suits travellers starting in the US who want a domestic network, a wider cabin range including Premium Select, and miles that do not expire. Turkish Airlines suits those heading beyond Europe, to Africa, Central Asia or the Middle East, who want a meal and a simple two-cabin product on one ticket via Istanbul. Fares and baggage rules differ by route, so check the specific booking.
Choose Delta Air Lines if…
- You are flying within the US or from a US hub such as Atlanta, Detroit or Seattle.
- You want a choice of cabins: Premium Select, Comfort+ or Delta One.
- You value SkyMiles miles that do not expire and Sky Club access via status or eligible cards.
Choose Turkish Airlines if…
- You are connecting through Istanbul to Africa, the Middle East or Asia.
- You want a meal and seatback entertainment included in Economy.
- You collect Star Alliance miles through Miles&Smiles, which can be used for Business awards.
At a glance
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Key differences
Network and hubs
Delta runs nine hubs: Atlanta, Boston, Detroit, Los Angeles, Minneapolis/St. Paul, New York JFK, LaGuardia, Salt Lake City and Seattle/Tacoma. It is strongest on US domestic and transatlantic routes. Turkish Airlines funnels most traffic through Istanbul Airport, with Ankara and Izmir as secondary hubs, and serves about 340 to 350 destinations.
Cabins and seats
Delta sells up to six fare levels: Delta One lie-flat, First on domestic and some shorter international routes, Premium Select, Comfort+ (34–36 in pitch), Main Cabin (30–33 in) and Basic Economy. Cabins vary by aircraft. Turkish Airlines sells two cabins, Economy and Business, with lie-flat Business seats on long-haul aircraft. Delta offers more steps between economy and business; Turkish keeps the choice simpler.
Food, Wi-Fi and entertainment
Turkish Airlines includes a meal in Economy and Business, and Business has Flying Chef dining. Seatback entertainment is standard, and Wego reports free Wi-Fi for Business and Miles&Smiles members, with wider free Wi-Fi rolling out through 2026. Delta serves free snacks and soft drinks on flights of 250 miles or more, and free meals on long-haul international routes. Free Wi-Fi for SkyMiles members covers most domestic flights as of 2025.
Baggage and fares
Turkish Airlines allows one 8 kg cabin bag (55x40x23 cm) plus a 4 kg personal item in Economy, and two 8 kg bags in Business, per its baggage page. Checked allowance depends on route and fare. Delta's baggage rules also vary by fare, route and status. Delta's Basic Economy cannot be changed or upgraded and earns no miles, so compare the fare conditions rather than the headline price.
Lounges and loyalty
Delta is a founding SkyTeam member; Turkish has been in Star Alliance since 2008, so the programme you earn in may decide the choice. Delta Sky Club access comes through membership, top status, certain American Express cards or international Delta One tickets, and day passes ended in 2019. Turkish has two large lounges at Istanbul Airport, one for elite members and one for Business passengers. SkyMiles miles do not expire.
Punctuality
Cirium data put Delta at 84.72% on time in 2023, against 74.45% for the North American average. For 2025, Simple Flying reported Turkish at 81.41%, ranked ninth. The years and regions differ, so the figures are not a like-for-like comparison. Delta's domestic cancellation rate exceeded the industry average in 2026.
Frequently asked questions
Is Turkish Airlines better than Delta?
It depends on the trip. Turkish includes meals in Economy and connects through Istanbul to a wide network; Delta has the larger US network and more cabin tiers, including Premium Select.
Does Turkish Airlines include checked baggage?
Checked allowance depends on route and fare. Economy cabin baggage is one 8 kg bag plus a 4 kg personal item. Delta's baggage allowance also depends on fare, route and status.
Do Delta and Turkish Airlines share an alliance?
No. Delta is a founding member of SkyTeam and Turkish Airlines belongs to Star Alliance, so miles and lounge access are generally not interchangeable.
About Delta Air Lines Read more
Overview
Delta Air Lines is a major US carrier headquartered in Atlanta, Georgia. According to Wikipedia, it was founded in December 1928 as Delta Air Service and began passenger operations on 17 June 1929. It is a founding member of the SkyTeam alliance and is listed on the New York Stock Exchange. It reported revenue of US$63.4 billion for 2025 and about 103,000 employees.
Network and hubs
Delta operates nine hubs: Atlanta (its largest), Boston, Detroit, Los Angeles, Minneapolis/St. Paul, New York JFK, New York LaGuardia, Salt Lake City and Seattle/Tacoma. As of April 2026, Wikipedia says it flies to 64 countries on more than 1,000 routes across the Americas, Europe, Africa, West and East Asia and Oceania. Regional services under the Delta Connection brand are flown by Endeavor Air, Republic Airways and SkyWest. Delta holds stakes in partners including Virgin Atlantic (49%), LATAM and Aeroméxico, and codeshares with many SkyTeam and other airlines.
Fleet
Wikipedia, citing Delta's 2025 Form 10-K, gives a mainline fleet of 987 aircraft, with an average age of 14.8 years at December 2024. Delta operates the world's largest passenger fleets of the Airbus A220, Boeing 717, 757, 767 and Airbus A330. Wide-bodies (A330, A350, Boeing 767) serve long-haul routes. Delta's Form 10-Q for March 2026 has a detailed fleet table.
On board
Cabins vary by route and aircraft:
- Delta One: lie-flat business class on long-haul and some transcontinental flights, with meals, an amenity kit and bedding.
- First: on domestic and some short- and medium-haul international flights, with 37–40 in of pitch.
- Premium Select: premium economy on many long-haul aircraft.
- Delta Comfort+: 34–36 in of pitch, priority boarding and complimentary drinks on flights of 250 miles or more.
- Main Cabin: 30–33 in of pitch, with free snacks and soft drinks on flights of 250 miles or more. Meals are free on long-haul international routes and sold on some other flights of 900 miles or more.
- Basic Economy: same service with fewer flexibility options, no ticket changes and seats assigned at check-in.
Delta Studio entertainment is available on many aircraft. Wikipedia reports free Wi-Fi for SkyMiles members on most domestic flights from 2025.
Good to know
- Baggage allowances and fees depend on fare, route and status. Check the Delta website before travelling.
- Basic Economy fares do not earn miles or Medallion qualifying miles (since December 2021) and cannot be upgraded.
- Delta Sky Club lounge access comes through membership, top-tier status, certain American Express cards or international Delta One tickets. Day passes ended in January 2019.
- The SkyMiles loyalty programme says miles do not expire.
- Punctuality: Cirium data cited by Wikipedia put Delta at 84.72% on time in 2023. Wikipedia also notes Delta's domestic cancellation rate exceeded the industry average in 2026, with pilot availability cited as a factor.
About Turkish Airlines Read more
Overview
Turkish Airlines (Türk Hava Yolları) is the flag carrier of Turkey. According to Wikipedia, it was founded on 20 May 1933, is listed on Borsa Istanbul (THYAO) and has been a member of Star Alliance since 2008. Its corporate headquarters are at the former Atatürk Airport site in Istanbul. Its subsidiaries include the low-cost carrier AJet, Turkish Cargo and Turkish Technic. Its frequent-flyer programme is Miles&Smiles.
Network and hubs
The main hub is Istanbul Airport, which replaced Atatürk Airport in a phased move completed in 2019. CAPA lists Esenboğa (Ankara) and Adnan Menderes (Izmir) as secondary hubs. Wikipedia describes the airline as serving more countries than any other carrier, with about 340 to 350 destinations in Europe, Asia, Africa, Oceania and the Americas, including a large domestic network. Most intercontinental journeys connect through Istanbul.
Fleet
Turkish Airlines Group, including AJet, had 516 aircraft in 2025, with up to 570 planned for 2026, according to its CFO (reported 5 March 2026). Third-party trackers such as Plane Finder list roughly 420 mainline aircraft, including Airbus A321neo, A321, A330, A350-900 and A320 types and Boeing 737, 777 and 787-9 types. Figures vary by source and date.
On board
Turkish Airlines operates two cabins, Economy and Business. Wego reports that every Economy fare includes a meal, checked baggage and seatback entertainment. Business class adds lie-flat seats on long-haul aircraft, Flying Chef dining and lounge access. Wego also reports that Wi-Fi is free for Business passengers and Miles&Smiles members, with free Wi-Fi for all passengers being rolled out through 2026. Seat dimensions vary by aircraft type and are not given here.
Good to know
- Cabin baggage: per the airline's baggage page, Economy allows one 8 kg bag (55x40x23 cm) plus a 4 kg personal item. Business allows two 8 kg bags plus a personal item.
- Checked baggage: the allowance depends on route and fare, so check the booking.
- Lounges: The Points Guy notes two large lounges at Istanbul, one for elite members and one for Business passengers.
- Punctuality: Simple Flying reported 81.41% on-time performance for 2025, using Cirium data.
- Safety: Wikipedia records 19 incidents and accidents in the airline's history, 15 of them fatal.
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