Citi is dropping a 40% transfer bonus to Turkish Airlines Miles&Smiles through August 31, 2026. That turns 1,000 ThankYou Points into 1,400 miles for anyone holding a Strata Premier, Strata Elite, or legacy Prestige card. Everyone else gets a lesser deal, so check your plastic before moving anything.[[1]](https://thepointsguy.com/loyalty-programs/current-transfer-bonuses/)[[1]](https://thepointsguy.com/loyalty-programs/current-transfer-bonuses/)

The bonus posts after the promotion ends and is capped at 50,000 bonus miles per account. Link your Miles&Smiles number first, search for award space, transfer only what you need, then wait. Classic Turkish roulette, but the math is too good to ignore right now.[[2]](https://deeparrival.com/news/citi-thankyou-turkish-miles-smiles-40-bonus-august-2026/)

This lands in one of those freak alignment moments. ANA award space is popping for fall and winter, Amex is running a concurrent 30% bonus to British Airways, Iberia, and Aer Lingus Avios through September 27, Capital One is tossing 15% to Avianca LifeMiles through month-end, and Flying Blue’s August Promo Rewards are still bookable for travel into January 2027.[[3]](https://thepointsguy.com/deals/transfer-bonus-from-amex-to-avios/)[[4]](https://www.nerdwallet.com/travel/learn/credit-card-transfer-bonuses)

Turkish Miles&Smiles: The 40% Hero

At 1.4x, US to Istanbul business class on Turkish metal drops to roughly 46,500 ThankYou Points one-way before taxes (65,000 miles divided by 1.4). That’s not life-changing on its own, but the real meat is on partners.

United Polaris business from the US to Europe costs 45,000 Turkish miles each way with low surcharges and decent saver availability. Effective cost: about 32,000 ThankYou Points. Book it before the bonus disappears and you’re laughing at cash fares that still flirt with $3,000.[[5]](https://awardlocker.com/blog/turkish-miles-and-smiles-complete-guide)

Lufthansa First to Frankfurt runs around 67,000 miles. That’s 48,000 ThankYou Points for a bed that feels like a hotel room with wings. ANA business to Tokyo is 60,000 round-trip on the partner chart in some cases—again, absurd when ANA’s own program demands blood oaths for comparable dates.

Domestic United in business or first for 15,000-22,500 miles is the lazy man’s hack. Transfer 16,000 ThankYou Points, get 22,400 miles, and laugh while your neighbor pays $800 for a last-minute upgrade that doesn’t exist.

Flying Blue, Avianca, and the Also-Rans

Citi’s 20% bonus to Flying Blue ends August 22. At effective 1.2x it’s still useful, especially with this month’s Promo Rewards offering 25% off to Europe, the Caribbean, and beyond through January 2027. Business class from the US to Paris or Amsterdam can land in the 50-60k mile range on sale. Combine with the Citi bonus and you’re looking at sub-45k ThankYou Points for a decent long-haul flat bed. Not bad, but the Turkish offer is simply fatter.[[6]](https://thepointsguy.com/deals/flying-blue-special-promo-rewards/)

Avianca LifeMiles gets a 15% boost from Capital One, not Citi. Still worth noting if you have both currencies. No fuel surcharges on Star Alliance awards makes it cleaner than Turkish for certain Europe routes (69-93k business), but the Citi-to-Turkish math beats it for most US departures right now. Your portfolio, your call.

Singapore KrisFlyer remains a 1:1 transfer with no current bonus. It’s still the king for Suites on the A380 to Singapore or Frankfurt if you can find space, but you’re not getting the same multiplier. Use it for the routes Turkish or LifeMiles can’t touch.

How It Stacks Against Amex Avios

The Amex 30% to Avios programs (1,000 MR becomes 1,300 Avios) is excellent for short-haul Europe, Qatar Qsuites, and Iberia business to Madrid. It expires later, on September 27, giving you breathing room.

But if your goal is a proper long-haul business or first class seat across the Pacific or to Istanbul, the Citi Turkish bonus delivers more immediate firepower. Avios shines when you want flexibility and low taxes; Turkish wins on raw premium cabin access to Star Alliance metal right now.

Don’t split your brain. Pick the trip first, then the program. Chasing every bonus like a points squirrel is how you end up with 47,000 miles in six orphan accounts and no award.

These windows close fast. Turkish space disappears the moment people notice it, and the 40% bonus is gone in three weeks.

Action item: Log into your Turkish Miles&Smiles account today, run a few searches for United Polaris, Lufthansa First, or ANA business on dates that actually work for you. Screenshot the exact award, calculate the ThankYou Points required at 1.4x, transfer only that amount from a premium Citi card, and lock it in before August 31. Everything else is noise.